During World War II, the United States Army divided its operations around the world into four theaters. Forces from many different Allied nations fought in these theaters. Other Allied countries have different conceptions of the theaters and/or different names for them.
Operational command SHAEF
Normandy Campaign June 6, 1944–July 24, 1944Northern France Campaign July 25, 1944–September 14, 1944Rhineland CampaignLorraine Campaign (unofficial) September 1, 1944–December 18, 1944Ardennes-Alsace Campaign December 16, 1944–January 25, 1945Central Europe Campaign March 22, 1945–May 11, 1945Operational command AFHQ
Algeria-French Morocco Campaign November 8, 1942–November 11, 1942Anzio Campaign January 22, 1944–May 24, 1944Egypt-Libya Campaign June 11, 1942–February 12, 1943Naples-Foggia CampaignNorth Apennines CampaignPo Valley CampaignRome-Arno CampaignSicily CampaignSouthern France Campaign (One month after the invasion, command was passed to SHAEF and the European Theater of Operations)Tunisia CampaignOperational commands were the Pacific Ocean and South West Pacific.
Pacific Ocean Areas (command) - Chester W. Nimitz
Pearl HarborDoolittle RaidCoral SeaMidwaySolomonsAleutiansGilberts & MarshallsMarianas & PalauVolcano Is & Ryukyu IsSouth West Pacific Areas (command) - Douglas MacArthur
Guadalcanal Campaign 1942–43New Guinea Campaign 1942-45Philippines Campaign 1941-42Dutch East Indies campaign 1941-42Solomon Islands campaign 1943–45Guadalcanal Campaign 1942–43Battle of Timor 1942-43Philippines Campaign 1944–45Borneo campaign 1945The China Burma India Theater served more as an Administrative Command rather than a Theater of Operations and lacked any true Operational Command.
The Operational Command was joint Allied South East Asia Command in the South-East Asian Theater The American General Joseph Stilwell commanded the operational Northern Combat Area Command and used his other positions to communicate directly with Joint Chiefs of Staff about some operational matters.
Burma CampaignBurma 1942 Campaign January 1942 – May 1942Central Burma CampaignChina Defensive Campaign July 4, 1942 – May 4, 1945China Offensive Campaign May 5, 1945 – September 2, 1945