French Conquest of Algeria (1830-1847): Invasion and Resistance

The French conquest of Algeria began in June 1830, when a French expeditionary force landed near Algiers and overthrew the Ottoman-backed ruler of the city within three weeks. Conquering the rest of the country took far longer: a war of resistance, led above all by the emir Abd al-Qadir, lasted until 1847. The conquest created France’s most important colony and laid the foundations of 132 years of settler rule that ended only with Algerian independence in 1962.

Background: the Regency of Algiers

Since the sixteenth century Algiers had been the capital of a largely autonomous province of the Ottoman Empire, known to Europeans as the Regency of Algiers. It was governed by a dey chosen by the local Ottoman military elite, with beys ruling the provinces of Oran (the west), Titteri (the centre) and Constantine (the east). Much of the interior was held by tribal confederations that paid tribute but ran their own affairs.

Relations with France soured over an old debt. During the 1790s two Algerian Jewish trading houses, Bacri and Busnach, had supplied grain to the French Republic, and the money owed had never been fully settled. In April 1827, during a heated audience, Hussein Dey struck the French consul, Pierre Deval, with a fly whisk. France responded with a naval blockade of Algiers that dragged on for three years without result.

Causes of the invasion

The fly-whisk incident was a pretext rather than a cause. King Charles X and his chief minister, Jules de Polignac, led a deeply unpopular ultra-royalist government. They hoped that a swift and glorious campaign would rally public opinion before the elections of 1830. Merchants in Marseille also had interests in North African trade, and the end of corsair activity from Algiers was presented as a service to all of Europe.

The capture of Algiers, 1830

The expedition was one of the largest France had mounted overseas. Roughly 34,000–37,000 soldiers under General Louis de Bourmont sailed from Toulon in late May 1830 aboard a fleet of several hundred warships and transports commanded by Admiral Guy-Victor Duperré. They landed at Sidi Ferruch (Sidi Fredj), about 25 kilometres west of Algiers, on 14 June.

On 19 June the French defeated the dey’s army at Staouéli. They then advanced on the city and besieged Fort l’Empereur, the fortress guarding Algiers from the landward side, which its defenders blew up on 4 July. The next day Hussein Dey capitulated in exchange for his personal safety and went into exile. The French seized the treasury of the Regency, worth several tens of millions of francs.

The victory did not save Charles X. Within weeks the July Revolution of 1830 drove him from the throne. The new king, Louis-Philippe, inherited a conquest that many in Paris regarded as an expensive embarrassment.

Hesitation and resistance, 1830-1839

For several years France pursued a policy of limited occupation, holding Algiers, Oran, Bône (Annaba) and a few other coastal towns. The collapse of Ottoman authority left a vacuum in the interior, and two strong leaders emerged to fill it.

In the east, Ahmed Bey of Constantine continued to govern in the name of the Ottoman sultan. A French attack on Constantine failed in November 1836 with heavy losses, but a second assault took the city in October 1837. Ahmed Bey retreated into the Aurès mountains and held out until 1848.

In the west, tribes around Mascara proclaimed a young religious scholar, Abd al-Qadir, as their emir in 1832. Drawing authority from Islam and from his family’s standing in the Qadiriyya Sufi order, he built a state with its own administration, taxes, workshops and a small regular army. The French twice recognised his authority over large areas by treaty: in the Desmichels Treaty of 1834 and, after his victory at the Macta in 1835, in the Treaty of Tafna, signed with General Thomas-Robert Bugeaud in May 1837.

Total war under Bugeaud, 1839-1847

The uneasy peace broke down in 1839, when a French column marched through territory Abd al-Qadir claimed, through the pass known as the Iron Gates. He declared war in November 1839, and his forces raided the settlements around Algiers.

France then committed itself to full conquest. Bugeaud, appointed governor-general in December 1840, increased the army in Algeria to around 100,000 men by the mid-1840s. He abandoned slow, heavy columns in favour of light mobile ones and made systematic use of the razzia, a raid to seize or destroy livestock, grain stores, orchards and villages. The aim was to starve the population into withdrawing support from the emir.

In May 1843 the Duke of Aumale captured Abd al-Qadir’s smala, his travelling capital of tents, families and followers. The emir took refuge in Morocco, which drew the Moroccan sultan into the war; a French victory at the Battle of Isly on 14 August 1844 forced Morocco to stop supporting him.

The conquest was marked by atrocities that shocked opinion even in France. In June 1845 troops under Colonel Aimable Pélissier lit fires at the mouths of caves in the Dahra mountains where members of the Ouled Riah tribe had taken refuge, suffocating several hundred people. Further revolts, including one led by a preacher called Bou Maza in 1845-1847, kept the war going.

Isolated and short of supporters, Abd al-Qadir surrendered to General Christophe de Lamoricière on 23 December 1847, on the promise that he could go into exile in the Middle East. The promise was broken: he was held in France until Louis-Napoleon released him in 1852.

Key people

• Hussein Dey (c. 1765-1838): the last dey of Algiers, who surrendered the city in 1830 and died in exile.
• Abd al-Qadir (1808-1883): emir and leader of the western resistance, later admired in Europe for protecting thousands of Christians during the Damascus riots of 1860.
• Thomas-Robert Bugeaud (1784-1849): governor-general from 1840 to 1847, architect of the war of attrition and later made a marshal and Duke of Isly.
• Ahmed Bey (c. 1786-1850): Ottoman bey of Constantine, who resisted until 1848.

Consequences

The conquest transformed Algeria. Land was confiscated from tribes and religious foundations and distributed to European colonists, who came from France, Spain, Italy and Malta. By the end of the 1840s the European population was over 100,000. The constitution of the Second Republic in 1848 declared Algeria part of France and divided its settled north into three departments.

For Algerians the cost was immense. Warfare, the destruction of crops and herds, famine and disease caused heavy loss of life; estimates of the population decline over the following decades vary widely and remain debated. Kabylia was conquered only in 1857, and the great revolt of 1871 was crushed and punished with further land seizures. Muslim Algerians remained colonial subjects without full citizenship.

Timeline

• 1827, April: Hussein Dey strikes the French consul with a fly whisk; France begins a blockade of Algiers.
• 1830, 14 June: French troops land at Sidi Ferruch.
• 1830, 5 July: Hussein Dey surrenders Algiers.
• 1832, November: Abd al-Qadir is proclaimed emir in western Algeria.
• 1837, 30 May: Treaty of Tafna recognises Abd al-Qadir’s authority over much of the interior.
• 1837, October: French forces capture Constantine.
• 1839, November: War resumes after the Iron Gates expedition.
• 1844, 14 August: France defeats Morocco at the Battle of Isly.
• 1847, 23 December: Abd al-Qadir surrenders.

Legacy

The conquest made Algeria the centrepiece of the French empire and a model, for better and worse, for later expansion during the Scramble for Africa. The settler society it created, and the exclusion of the Muslim majority from equal rights, set the stage for the bitter Algerian War of Independence of 1954-1962. In Algeria, Abd al-Qadir is honoured as a founding national hero.

Why it matters

The fall of Algiers in 1830 opened France’s modern colonial era in Africa. The long, brutal war that followed shaped relations between France and Algeria for well over a century, and its memory remains politically sensitive in both countries today.