Civil Wars

Spain in the early twentieth century was not a unified nation-state in the way that France or Britain were. It was a patchwork of regions with distinct languages, cultures, and historical traditions, and for many Spaniards loyalty to a region or even a local town outweighed loyalty to Madrid or to a shared Spanish identity. This fragmentation was one of the deepest long-term causes of the instability that eventually produced civil war in 1936.

The most significant regional identities were found in Catalonia, the Basque Country, and Galicia. Catalans and Basques in particular spoke their own languages (Catalan and Euskera), had their own legal and cultural traditions, and had historically enjoyed degrees of self-governance that had been eroded by centuries of centralization from Madrid. By the early 1900s, both regions had developed strong separatist and autonomist movements demanding recognition of their distinct identity and greater self-rule, sentiments that clashed directly with conservative, centralist visions of a unified Catholic Spain.

These cultural divisions were made far more dangerous because they overlapped with stark economic disparities. Catalonia and the Basque Country were Spain's most industrialized regions, with advanced textile manufacturing, shipbuilding, steel, and banking sectors and well-developed trade networks. This gave them not only wealth but also organized, politically conscious industrial working classes who supported trade unions and, in Catalonia especially, anarcho-syndicalism. Much of the rest of Spain -- particularly the rural interior and the south -- remained agrarian, technologically backward, and impoverished.

This uneven development meant that different regions did not merely disagree on culture or identity -- they had genuinely different economic interests. Industrial Catalonia and the Basque Country wanted policies favourable to trade and manufacturing and resented subsidizing a poorer, agrarian interior; landless peasants in Andalusia wanted radical land reform that threatened the landowning elite who dominated national conservative politics. Because regional grievances were entangled with class and economic grievances, any attempt at national reform -- whether land reform, tax policy, or devolution -- was almost guaranteed to alienate some region or class even as it satisfied another.

The consequence, by the 1930s, was a Spain in which regional inequality obstructed unified national development. Governments in Madrid struggled to build a coalition broad enough to satisfy industrial Catalonia, agrarian Andalusia, conservative Castile, and separatist-leaning Basque provinces simultaneously. This structural fragmentation did not by itself cause the Civil War, but it created deep fault-lines of distrust between regions and classes that later political crises -- the collapse of the monarchy, the Azaña reforms, the Asturias revolt -- would widen into an unbridgeable divide.

In the decades before the Spanish Civil War, the political right in Spain was not a single party or ideology but a traditional alliance of three interlocking pillars of power: the great landowners, the Catholic Church, and the army. Each pillar drew on a different source of authority — economic, spiritual, and coercive — but together they formed a conservative bloc that dominated Spanish society long before the Republic was declared in 1931 and that felt directly threatened by the reforms that followed.

Land ownership in Spain was extraordinarily concentrated. Roughly half of all agricultural land was controlled by just 50,000 individuals, many of whom owned vast estates known as latifundia, particularly in the south. This left huge numbers of landless labourers dependent on these landowners for work and wages, and gave the landowning elite a direct economic stake in preserving the existing rural order. Any reform that threatened land redistribution — a central demand of anarchists and socialists in regions like Andalusia — was, by definition, an attack on this class's material interests.

The Catholic Church had lost some formal political power during the secularising reforms of the 19th century, but it retained enormous social influence. It controlled much of Spain's education system, ran extensive social services, and shaped everyday life through its moral authority over marriage, family, and community. This gave the Church a powerful stake in resisting the kind of secular reform later pursued by the Second Republic, such as civil marriage, divorce law, and the removal of religious education from state schools.

The army was the third pillar, and unlike the landowners and the Church, it held the means of physical coercion. Crucially, the Spanish army in this period was not simply a national defence force — it was a political actor in its own right, repeatedly intervening in governance and consistently aligning itself with conservative causes when the existing order seemed threatened. This political role of the military meant that the survival of any Spanish government ultimately depended on whether it retained the army's support, a dependency starkly illustrated when Alfonso XIII lost the throne in 1931 once the army withdrew its backing.

In the early twentieth century, Spain's most industrialized cities -- above all Barcelona, the hub of Catalonia's textile and manufacturing economy -- became the heartland of a distinctive revolutionary movement: anarcho-syndicalism. This was a fusion of anarchist political philosophy with syndicalism, the strategy of organizing workers into trade unions (syndicats) as the primary vehicle for revolutionary change. Rather than seeking to capture the existing state through elections or parliamentary reform, anarcho-syndicalists sought to dismantle centralized political authority altogether and replace it with structures of worker control rooted in the factory floor and the union hall.

The movement's core demands reflected the everyday grievances of an urban industrial workforce combined with a radical vision of how society should ultimately be organized:

• Worker control of industry and factories -- production and management decisions placed directly in the hands of those who worked in them, rather than owners, bosses, or a state bureaucracy.
• Practical improvements: shorter working hours, higher wages, and better conditions -- demands shared with more moderate trade unionism.
• Decentralized political authority -- a rejection of any strong centralized state, whether monarchist, republican, or even a future socialist one, in favour of federations of self-governing communities and workplaces.

This combination made anarcho-syndicalism distinct from Marxist-inspired socialism, which generally sought to seize and use state power (even temporarily) to build a new order. Anarcho-syndicalists distrusted the state itself as inherently oppressive, regardless of who controlled it.

Anarcho-syndicalism in the cities should be distinguished from the more traditional anarchism found in poorer, rural regions such as Andalusia. There, anarchism focused less on factory control and more on land redistribution, the dismantling of large estates (latifundia), reduced taxation, and local autonomy from central government. Both currents shared a deep hostility to centralized authority and a belief that revolution should emerge organically from below rather than through detailed, top-down planning -- a vagueness that made anarchism broadly appealing but also difficult to unify into a single, disciplined political movement.

In Spain's poorer agricultural interior, and above all in Andalusia, a distinctive strand of anarchism took root among landless peasants and smallholders. This rural anarchism grew directly out of the region's brutal system of land ownership, in which vast estates known as latifundia were held by a tiny number of wealthy families while the majority of the rural population worked as poorly paid, often seasonal, agricultural labourers with no land of their own and little prospect of acquiring any.

Unlike the anarcho-syndicalism of industrial cities such as Barcelona, which centred on trade unions, factory control, and improved wages and hours for urban workers, rural anarchism in Andalusia was shaped by the concerns of an impoverished agrarian society. Its followers demanded:

• Land redistribution — breaking up the latifundia and transferring land to the peasants who worked it
• Reduced taxes on the rural poor, who bore a disproportionate burden relative to their meagre incomes
• Local autonomy — freedom from interference by the central government in Madrid, whose policies were seen as serving landowners and elites rather than the peasantry

This movement mattered as a long-term cause of the Spanish Civil War because it exposed the depth of regional and economic division within Spain. While roughly half of all Spanish land was controlled by just 50,000 individuals, millions of landless peasants in the south had every incentive to support radical change. Successive governments — including the reforming Second Republic after 1931 — attempted land reforms, but rural poverty in Andalusia remained largely unchanged, leaving peasants disillusioned with constitutional politics and receptive to revolutionary anarchist ideas that promised more immediate and complete redistribution.

Anarchism occupies a distinctive place among the revolutionary ideologies competing for influence in early twentieth-century Spain. Unlike Marxism or socialism, which offered detailed theories of class struggle, state power, and economic planning, anarchism rejected the very idea of a centralized state as inherently oppressive -- whether that state was capitalist, monarchist, or even socialist. For Spanish anarchists, hierarchy itself, not merely a particular ruling class, was the problem to be dismantled.

The most important feature of Spanish anarchist thought for understanding the causes of the Civil War is its theory of revolutionary change. Many anarchists believed that revolution would emerge organically, through spontaneous action and the creative energy of ordinary people, rather than through the kind of strict, centrally directed planning favoured by Marxist-Leninist movements. There was no anarchist equivalent of a five-year plan or a vanguard party dictating the correct sequence of revolutionary stages. Instead, anarchists trusted that once the coercive structures of state, church, and landlordism were removed, a just society would arise naturally from the collective initiative of workers and peasants themselves.

This vision was deliberately vague, emphasising broad social transformation over detailed policy blueprints. That vagueness was simultaneously anarchism's greatest strength and its greatest weakness. It made the ideology adaptable, capable of appealing to very different social groups facing very different problems -- from Barcelona's industrial workers to Andalusia's landless peasants -- because each group could project its own grievances and hopes onto the same broad anti-authoritarian vision. But this same openness made anarchism difficult to unify into a single, disciplined movement with agreed tactics, a clear chain of command, or a coordinated political strategy, a weakness that would resurface with damaging effect once anarchists had to cooperate with other factions during the Civil War itself.

By the early 1930s, Spanish left-wing politics was not a single movement but a crowded and quarrelsome coalition of rival currents, each with its own theory of how change should occur, who should lead it, and what a post-revolutionary Spain should look like. This diversity reflected genuine intellectual disagreement, but it also produced practical consequences: rival unions, competing newspapers, and mutual suspicion that made it extremely difficult for the left to act as one bloc against a unified conservative-military establishment.

Marxism and socialism had been established in Spain since the late nineteenth century, chiefly through the Spanish Socialist Party (PSOE) and its allied trade union, the UGT (Unión General de Trabajadores). Socialists generally favoured working within the existing state structure, using parliamentary reform, land redistribution laws, and labour protections to gradually improve conditions for workers and peasants — a strategy that put them at odds with more revolutionary currents impatient for immediate structural change.

Within the broader Marxist left, the sharpest and most consequential division was between Stalinists and Trotskyites. Stalinists, represented in Spain chiefly by the Spanish Communist Party (PCE), took their direction from Moscow and the Comintern. Their priority was disciplined, centralised organisation and — crucially, once civil war broke out — subordinating revolutionary social change to the immediate task of winning the war, since Stalin feared that talk of world revolution would frighten potential allies like France and Britain. Trotskyites, represented by the POUM (Partido Obrero de Unificación Marxista), rejected this caution. They argued for permanent, uninterrupted revolution, insisting that social transformation and the military struggle against fascism could not be separated — to fight the war without pursuing revolution simultaneously was, in their view, to betray the working class.

These divisions were not merely theoretical debates confined to party conferences; they translated directly into organizational rivalry. Each faction built its own union, militia, and press, competing for the loyalty of the same working-class and peasant base. Socialists frequently clashed with trade unionists over how closely to cooperate with anarchists, who themselves refused to formally join any centralised party structure at all, prizing local autonomy above coordinated national strategy. The result, on the eve of the Civil War, was a left-wing political scene that a historian might fairly describe as a landscape of parties, unions, and militant groups without any single accepted leadership.

By the early 1930s, King Alfonso XIII presided over a monarchy that had lost virtually all public legitimacy. Three interlocking short-term causes converged to bring the regime down in April 1931: political corruption within the royal court and government, economic hardship affecting ordinary Spaniards, and the king's close association with the dictatorship of Miguel Primo de Rivera, who had ruled Spain with royal backing from 1923 to 1930.

Primo de Rivera's dictatorship had initially promised stability but instead entrenched cronyism and inefficiency, and its collapse in 1930 left Alfonso XIII exposed as the figure who had sanctioned and sustained the authoritarian experiment. Rather than distancing the crown from the discredited regime, the king's long association with it meant that public anger against the dictatorship transferred directly onto the monarchy itself. This left Alfonso with almost no reservoir of goodwill among a population already suffering from economic strain.

The fall of Alfonso XIII should be understood as the short-term trigger that opened Spain's road toward republicanism, but it did not resolve the deeper long-term tensions — regional divisions, land inequality, and ideological fragmentation — that had built up over decades. The Second Republic that replaced the monarchy inherited all of these unresolved problems, meaning the collapse of 1931 was a beginning, not an ending, of Spain's political crisis.

When Manuel Azaña's centre-left coalition took power after the June 1931 elections, one of its first priorities was addressing Spain's deeply unequal rural economy. Roughly half of all agricultural land was controlled by around 50,000 individuals, with vast estates known as latifundia dominating regions like Andalusia and Extremadura while millions of landless labourers and smallholding tenant farmers lived in chronic poverty. Azaña's government sought to relieve this pressure not through wholesale land redistribution, but through targeted legal reforms designed to protect existing rural workers and encourage collective forms of agriculture.

The government's agrarian measures had two main strands. First, it introduced legal protections for tenant farmers against eviction, aiming to give peasants who worked land they did not own greater security of tenure. This was intended to prevent landlords from arbitrarily removing tenants who could not meet rent demands during poor harvests, a common and destabilising practice in the countryside. Second, the government offered support for agricultural collectives and cooperatives, encouraging peasants to pool resources, land, and labour rather than relying solely on individual smallholdings or dependence on large landowners. These cooperative structures were meant to improve efficiency and bargaining power for poorer farmers without directly confiscating land from the elite.

In practice, these reforms produced only limited change. Landowners retained their estates, and many found legal or informal ways to circumvent tenancy protections, such as leaving land uncultivated rather than leasing it under the new rules. Agricultural collectives and cooperatives, while ideologically appealing to some socialists and republicans, lacked the capital, infrastructure, and state investment needed to transform rural productivity at scale. Crucially, the reforms did nothing to break up land ownership itself — the structural source of rural poverty. As a result, rural poverty remained largely unchanged, and the peasantry who had hoped the Republic would deliver meaningful change grew increasingly disillusioned with Azaña's government.

The persistence of rural poverty under Azaña matters for understanding the broader causes of the Spanish Civil War. It helps explain why the Republic simultaneously provoked fierce conservative opposition — who saw any reform as a dangerous precedent — and deep disillusionment on the left, who saw the reforms as inadequate half-measures. This dual failure to satisfy either side of Spanish politics widened the gulf between right and left, contributing to the polarisation that made compromise increasingly difficult as the 1930s progressed.

After the collapse of the monarchy and the establishment of the Second Republic in 1931, the centre-left coalition government led by Manuel Azaña moved quickly to address the grievances that had built up under decades of conservative dominance. Among the government's priorities was labour reform: legislation intended to improve conditions for Spain's large population of landless labourers, tenant farmers, and industrial workers. This was not an isolated policy area — it sat alongside church-state separation and military reform as part of a broader project to modernise Spanish society. However, labour reform proved to be one of the most contentious elements of Azaña's programme, because it directly threatened the economic interests of the landowning elite, one of the three pillars (alongside the Church and the army) of traditional conservative power in Spain.

The reforms responded to genuine structural problems. Spain's agricultural economy was marked by extreme inequality: roughly half of all land was controlled by around 50,000 individuals, while vast numbers of landless labourers worked for subsistence wages on the great estates (latifundia), particularly in southern regions such as Andalusia. This inequality had fuelled anarchist and socialist movements for decades and was widely understood as a root cause of rural unrest. Azaña's government therefore targeted the rural labour market directly, alongside more general improvements to workers' legal protections.

Despite the government's stated ambitions, the practical impact of these reforms on the everyday lives of Spain's rural poor was limited. Rural poverty remained largely unchanged. Land redistribution proceeded slowly, bureaucratic obstacles delayed implementation, and many of the underlying structural problems — landlessness, low wages, seasonal unemployment — persisted well into the mid-1930s. This created a paradox that is essential to understanding the reforms' role as a cause of the Civil War: the changes were too moderate to satisfy the radical left, who saw them as inadequate half-measures that left the fundamental latifundia system intact, yet too radical to be tolerated by the conservative right, who interpreted even modest interference with property rights, tenancy arrangements, and traditional social hierarchy as an existential attack on the foundations of Spanish society.

This conservative backlash manifested quickly and violently. In August 1932, General José Sanjurjo led the Civil Guard in an attempted rebellion against the Republic — an early sign that sections of the military and landed elite regarded the Azaña government's reforms, labour policy included, as intolerable. Although the rebellion was crushed with the help of the anarcho-syndicalist CNT, it exposed the depth of right-wing hostility and the Republic's fragile control over the armed forces. Later, after the right-wing coalition won power in the November 1933 elections, one of its first acts was to begin dismantling or ignoring Azaña's reforms, especially in land policy and labour rights — confirming that these measures had become one of the central fault lines of Spanish politics, provoking regional revolts such as the 1934 Asturias uprising when reversed.

When Manuel Azaña's centre-left coalition took power following elections in June 1931, it moved rapidly to dismantle one of the pillars of traditional Spanish conservatism: the political and social authority of the Catholic Church. For centuries, the Church had been intertwined with the Spanish state, controlling much of the education system, shaping social norms around marriage and family life, and acting as a reliable ally of the landowning elite and the army. Azaña's reforms sought to end this arrangement by constitutionally separating church and state, a change that was as much about redefining Spanish national identity as it was about religious policy.

The 1931 Constitution of the Second Republic formally ended the privileged constitutional status the Catholic Church had held under the monarchy. Catholicism was no longer recognized as the official state religion, religious orders lost state subsidies, and the government began restricting the Church's role in education, a domain it had dominated through religious schools and the training of teachers. The government aimed to build a secular, state-run education system as an alternative, viewing the Church's grip on schooling as a barrier to modernising Spanish society and reducing the conservative indoctrination of children.

Alongside the separation of church and state, Azaña's government introduced civil marriage, allowing couples to marry through a state ceremony rather than requiring a religious rite conducted by a priest. This was accompanied by the legalisation of divorce, a right previously unavailable in a country where Catholic doctrine treated marriage as an indissoluble sacrament. Together, these measures removed the Church's monopoly over one of the most intimate areas of civil life and gave individuals — particularly women trapped in unhappy or abusive marriages — new legal freedoms that had not existed under the monarchy.

These reforms sat within a broader package of Azaña-era change that also included military reforms, forcing the early retirement of many officers to reduce the army's political influence, and agricultural reforms aimed at protecting tenant farmers. Taken together, this reform programme reflected the government's ambition to modernise Spain by weakening the traditional alliance of landowners, army, and Church that had underpinned conservative dominance for generations. However, this same ambition ensured that church reform became a lightning rod for conservative anger rather than a unifying national achievement.

When Manuel Azaña's centre-left coalition took power after the establishment of the Second Republic in 1931, it recognized that Spain's army was not simply a military institution but a political actor. Officers had a long history of intervening in governance, and the army was closely tied to conservative, monarchist, and Catholic interests. Azaña, who himself became Minister of War, understood that any programme of republican reform would be vulnerable unless the military's capacity to intervene in politics was reduced.

Spain's officer corps was, in proportion to the size of the army, vastly oversized. There were far more officers than could reasonably be deployed to command the existing units, a legacy of decades of political appointments and promotions used to reward loyalty rather than merit. This bloated hierarchy gave disproportionate influence to a military caste that was largely conservative in outlook and resistant to republican reform.

Azaña's solution was to offer forced retirement on full pension to officers willing to leave active service. Rather than dismissing officers outright, which risked provoking immediate and violent resistance, the government used financial incentives to encourage voluntary or semi-voluntary departure. Officers who accepted retirement kept their full salary as a pension, softening the blow of losing active command and reducing the likelihood of organized backlash.

This military reform must also be understood alongside Azaña's other early measures — tenant farmer protections, support for agricultural cooperatives, separation of church and state, and recognition of civil marriage and divorce. Together, these reforms pleased moderate reformists but were seen by the conservative right as a coordinated attack on traditional Spanish institutions: the Church, the landowning elite, and now the army. This convergence of grievances helps explain why hostility to the Republic hardened so quickly among conservative and military circles, setting the stage for the later Sanjurjo rebellion of 1932 and, ultimately, the 1936 uprising.

By August 1932, the Second Spanish Republic under Manuel Azaña had introduced a wave of reforms — land redistribution measures, restrictions on the Catholic Church's role in education, and military reforms that forced the retirement of many officers. These changes had already provoked deep resentment among conservatives, monarchists, landowners, and the army, groups who saw the Republic as a direct threat to traditional Spanish society.

It was against this backdrop that General José Sanjurjo, a senior officer with strong conservative sympathies, led an uprising by the Civil Guard — Spain's national gendarmerie — against the Republican government. The rebellion aimed to overthrow Azaña's administration and reverse the reforming direction the Republic had taken since 1931.

The uprising was quickly suppressed. Crucially, it was put down with assistance from the CNT (Confederación Nacional del Trabajo), the anarcho-syndicalist trade union movement — a group whose members were generally hostile to the Republican government's moderate, centrist character but who mobilized against Sanjurjo's more immediate threat: a right-wing military takeover. This unusual alignment between anarchist workers and the Republican state, born of shared opposition to reactionary military rule, illustrates how fluid and issue-specific political loyalties could be in early-1930s Spain.

In the rebellion's aftermath, middle-class liberals continued to back the Republic, but both the radical left and the conservative right remained deeply distrustful of the government and of each other. Sanjurjo himself would later be central to the July 1936 military conspiracy against the Republic, though he died in a plane crash en route to lead it — meaning his 1932 rebellion serves as a direct rehearsal for the far larger and more successful uprising four years later.