World War I (1914-1918):
1. Europe: The majority of the fighting in World War I took place in Europe. Major battlefields included the Western Front, which stretched across Belgium, France, and Luxembourg, and the Eastern Front, which encompassed regions of the Russian Empire, Germany, Austria-Hungary, and the Balkans.
2. Middle East: The Ottoman Empire, which sided with the Central Powers, was also a significant theater of war. Conflicts occurred in the Middle East, including the Gallipoli Campaign in Turkey, the Sinai and Palestine Campaign, and the Mesopotamian Campaign in present-day Iraq.
3. Africa: Parts of Africa were also affected by World War I. German colonies in Africa, such as German East Africa (now Tanzania, Rwanda, and Burundi) and German South West Africa (now Namibia) became battlegrounds.
World War II (1939-1945):
1. Europe: Europe was once again the primary theater of operations during World War II. Major battles occurred on the Eastern Front, where Germany and the Soviet Union clashed, and on the Western Front, which saw the Allied forces, including the United States, Britain, and France, liberate Western Europe from Nazi occupation.
2. Asia: The Asia-Pacific region witnessed intense fighting during World War II. The Japanese Empire expanded its influence, leading to conflicts in China, Southeast Asia, and the Pacific Islands. Major campaigns included the Battle of Midway, the Guadalcanal Campaign, and the Battle of Iwo Jima.
3. North Africa and the Mediterranean: North Africa and the Mediterranean were also important theaters of war. Notable campaigns included the North African Campaign, which culminated in the Allied victory at El Alamein, and the Battle of Crete.
4. Atlantic and Arctic: The Battle of the Atlantic, which involved German U-boats attempting to disrupt Allied shipping lanes, took place in the waters of the Atlantic Ocean. Additionally, the Arctic convoys were crucial for delivering supplies to the Soviet Union.
5. South Pacific: The South Pacific was the scene of significant naval battles, such as the Battle of the Coral Sea and the Battle of the Philippine Sea.
These are just a few of the key locations where World War I and World War II occurred. The wars spanned multiple continents and involved numerous countries, resulting in profound global impacts and reshaping the political and geopolitical landscapes of the world.