The Mediterranean and Middle East Theatre was a major theatre of operations during the Second World War. The vast size of the Mediterranean and Middle East theatre saw interconnected naval, land, and air campaigns fought for control of the Mediterranean, North Africa, the Horn of Africa, the Middle East and Southern Europe. The fighting in this theatre lasted from 10 June 1940, when Italy entered the war on the side of Nazi Germany, until 2 May 1945 when all Axis forces in Italy surrendered. However, fighting would continue in Greece – where British troops had been dispatched to aid the Greek government – during the early stages of the Greek Civil War.
The British referred to this theatre as the Mediterranean and Middle East Theatre while the Americans called the theatre of operations the Mediterranean Theater of War. The German official history of the fighting is dubbed The Mediterranean, South-East Europe, and North Africa 1939–1942. Regardless of the size of the theatre, the various campaigns were not seen as neatly separated areas of operations but part of one vast theatre of war.