How a forgotten First World War campaign was won in the desert

How a forgotten First World War campaign was won in the desert
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In short: In 1915, South African forces achieved a swift victory in German South-West Africa, now Namibia. This campaign of maneuver, fought across harsh, arid terrain, aimed to neutralize German radio transmitters and ports. Despite internal rebellion and poisoned wells, the Allied victory remains a notable, early success of the Great War.

The campaign began in August 1914, shortly after the outbreak of the First World War. South Africa, acting for the British Empire, sought to prevent Germany from using its colonial ports or powerful radio transmitters to threaten British shipping. By 18 September 1914, South African troops had occupied the port of Lüderitz. However, the invasion was soon stalled by the Maritz Revolt, an internal uprising led by Lieutenant-Colonel Manie Maritz and other officers who remained unreconciled to the British victory in the 1902 Boer War.

The rebellion, which gathered about 12,000 fighters in the Transvaal and Orange Free State, forced the South African government to declare martial law. Generals Louis Botha and Jan Smuts effectively suppressed the revolt by early February 1915. With the home front secure, Botha—who took the unusual step of serving as commander-in-chief while also acting as Prime Minister—launched a renewed invasion. A force of 60,000 volunteers advanced in four columns, utilizing fast-moving mounted units to outflank the approximately 6,000 German colonial soldiers.

The campaign was defined by extreme environmental challenges, including intense heat, water shortages, and wells poisoned by retreating German forces. Despite these obstacles, the South Africans maintained momentum. A decisive battle occurred at Gibeon on 27 April 1915, and the capital, Windhoek, fell the following month. The Germans were squeezed into the north-west, suffering a final defeat at Otavi on 1 July 1915. They surrendered at Khorab on 9 July 1915, marking the end of the campaign with minimal casualties.

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