World War I took place across multiple theaters around the world, with the main fighting concentrated in Europe, especially Western Europe, the Middle East, and parts of Africa and Asia-Pacific regions under colonial rule. The war lasted from 28 July 1914 to 11 November 1918 and involved a wide range of combat areas, including:
- Europe
- Western Front: trench warfare across Belgium, northern France from the English Channel to Switzerland
- Eastern Front: fought across the vast lands of Russia, Poland, and the Baltic states
- Other fronts in the Balkans and Italy
- Middle East
- Ottoman Empire theaters in areas such as Mesopotamia (modern-day Iraq), Sinai and Palestine, and the Caucasus
- Africa
- Campaigns in German East Africa (present-day Tanzania), the Congo, and the African deserts and coasts
- Asia-Pacific and oceans
- campaigns and naval actions in places like the Pacific and Indian Ocean regions, including colonial theaters
If you’d like, I can tailor this to a specific focus (e.g., by year, by front, or by major campaigns) or provide a concise timeline of the major fronts.
