Introduction
South Africa’s participation in the Second World War was politically divisive, militarily significant, and socially transformative. When Britain declared war on Germany on 3 September 1939 after the invasion of Poland, the Union of South Africa had to decide whether it too would enter the war. That decision produced a major constitutional and political crisis. Ultimately South Africa joined the Allied war effort on 6 September 1939 under Prime Minister Jan Smuts, sending troops to East Africa, North Africa, Madagascar, and Italy.
The Political Crisis of September 1939
South Africa was then a self-governing dominion of the British Commonwealth, not an independent republic. Prime Minister J.B.M. Hertzog favored neutrality, reflecting both Afrikaner nationalism and reluctance to support Britain in another European conflict. Jan Smuts, by contrast, argued that Nazi Germany posed a grave threat and that South Africa should support the Allies.
Parliament became the arena of the decision. On 4 September 1939 Hertzog’s motion for neutrality was defeated in the House of Assembly by a narrow margin. Hertzog resigned, and Smuts formed a new government. On 6 September South Africa declared war on Germany.
Divisions Within White Society
The war deepened existing tensions within white politics. Many English-speaking South Africans supported the Allied cause. Many Afrikaners did not, especially those shaped by memory of the South African War of 1899–1902 and resentment toward Britain. Some extremist groups, such as the Ossewabrandwag, opposed the war more aggressively and in certain cases engaged in acts of sabotage.
The war therefore became a struggle not only abroad but also over the political direction of the Union itself. Smuts represented imperial loyalty, liberal internationalism, and strategic modernism. His opponents increasingly fed the nationalist current that would later bring the National Party to power in 1948.
Military Forces and Mobilization
South Africa did not impose full conscription for white men, partly because of internal divisions. Service was based on volunteers. Even so, large numbers served. The Union Defence Force and supporting services included white, Black, Coloured, and Indian South Africans, though under racially segregated conditions and with sharp differences in military roles.
Black South Africans were largely barred from combat roles and served mainly in labor, transport, engineering, and support units, notably in the Native Military Corps. Coloured and Indian personnel also served in segregated formations. Their contribution was substantial, even if the state denied them equality.
East African Campaign, 1940–1941
South African forces first saw major action in East Africa against Italian positions in Ethiopia and Somaliland. Between 1940 and 1941 they played an important role in the Allied campaign that led to the collapse of Italian East Africa. These operations demonstrated the mobility and effectiveness of South African formations in African theaters.
North Africa and El Alamein
The most famous South African wartime service occurred in North Africa. South African troops fought against Axis forces in Libya and Egypt. The fall of Tobruk on 21 June 1942 was a painful moment, with many South African soldiers taken prisoner. Yet South African units also took part in the battles that checked and reversed Axis advances, including the wider campaigns around El Alamein in 1942.
The desert war became central to South African military memory. It was a theater in which the Union’s forces fought within a large imperial coalition under harsh conditions and with high visibility.
Madagascar and Italy
In 1942 South African troops participated in the Allied occupation of Madagascar to prevent Japanese use of the island. Later, the South African 6th Armoured Division fought in Italy from 1944 to 1945. There it took part in the advance northward through difficult mountainous terrain and contributed to the final Allied victory in Europe.
The Home Front and Industrial Change
The war stimulated South African industry. Manufacturing expanded to meet military demand, and urban economies grew. This accelerated industrialization beyond the mining-centered model that had previously dominated. War production created new jobs, drew more people into towns, and strengthened the state’s planning capacity.
Black urban workers became increasingly important to the wartime economy. At the same time, they faced wage discrimination, restricted rights, and intensified policing. These contradictions helped fuel later labor and political activism.
African Political Responses
For Black South Africans, the war exposed the hypocrisy of fighting fascism abroad while racial inequality persisted at home. Leaders and activists often supported the defeat of Nazism but demanded that democratic principles apply within South Africa as well. The African National Congress and other organizations pressed more insistently for rights during and after the war.
The Atlantic Charter of 1941 and wartime rhetoric about freedom encouraged political expectations that the Union state was not prepared to satisfy. This widening gap between principle and practice would matter greatly in the postwar period.
The War’s Political Legacy
Although the Allies won the war in 1945, Smuts’s government did not emerge permanently strengthened. In the 1948 election, the National Party and Afrikaner Party coalition defeated Smuts. Nationalist resentment, anxieties about urbanization, and racial politics outweighed the prestige of wartime leadership.
Thus the war had a paradoxical outcome. South Africa fought on the Allied side against fascism, yet just three years after victory the country elected a government that formally entrenched apartheid.
Conclusion
South Africa’s role in the Second World War was substantial in both military and domestic terms. After the political crisis of September 1939, the Union under Jan Smuts joined the Allies and contributed forces in East Africa, North Africa, Madagascar, and Italy. The war stimulated industry, sharpened political divisions, and raised urgent questions about citizenship and racial justice. Far from being a minor imperial footnote, the war was a major turning point in the making of twentieth-century South Africa.