World War 1 had significant impacts across Africa. In German colonies like Togo, Cameroon, and South-West Africa, German forces were defeated by British and French troops by mid-1914. In East Africa, German commander Paul von Lettow-Vorbeck waged a guerilla campaign against British, South African, and Portuguese forces for over two years. Both German and Allied forces relied heavily on African porters for transportation and supplies, many of whom died from disease, malnutrition and exhaustion. The war also led to the conscription of African soldiers by all combatant forces in Africa, some of whom were later deployed to Europe, resulting in thousands of casualties and great hardship for African civilizations.