British Colonies:
- Canada: Canada was a self-governing Dominion within the British Empire and actively participated in the war effort. It provided troops, resources, and financial support to the British war effort.
- Australia: Australia was another Dominion of the British Empire that contributed significant military forces to the war. Many Australians volunteered and fought in various campaigns, particularly on the Western Front.
- New Zealand: New Zealand, a British Dominion, also sent troops to fight in the war and made substantial contributions to the war effort.
- India: India, a colony under British rule, contributed a large number of soldiers to the British war effort. Over a million Indian troops were deployed in various theaters of war, including the Middle East, Europe, and Africa.
- South Africa: South Africa, then under British rule, played a role in the war by sending troops to fight in campaigns such as the East African campaign.
French Colonies:
- French Indochina: French Indochina, which included Vietnam, Cambodia, and Laos, was a French colony that contributed resources and some military support to the French war effort.
- French West Africa: French West Africa, consisting of several territories in Western Africa, also provided resources and military support to France.
German Colonies:
- German East Africa: German East Africa, comprising present-day Tanzania, Rwanda, and Burundi, was a German colony that saw fighting during World War I. The war in East Africa was characterized by guerrilla warfare and significant African involvement.
- German South West Africa: German South West Africa, modern-day Namibia, was another German colony that faced military campaigns during the war.
- German New Guinea: German New Guinea, encompassing parts of present-day Papua New Guinea and some Pacific islands, was also a German colony during the war.
Other colonies that were involved in the war include:
- Italian Somaliland
- Italian Libya
- Belgian Congo
- Portuguese Angola
- Portuguese Mozambique
These colonies played varying roles in the war, providing resources, troops, and support to their respective mother countries. The war impacted the colonies not only through direct military involvement but also through economic disruptions, political changes, and the rise of nationalist movements.