China Burma India theater

China Burma India Theater
Part of the Asia-Pacific theater of World War II
Insignia of the CBI Theater
Location China, Burma, India (also Thailand, French Indochina)

China Burma India Theater (CBI) was the United States military designation during World War II for the China and Southeast Asian or India–Burma (IBT) theaters. Operational command of Allied forces (including U.S. forces) in the CBI was officially the responsibility of the Supreme Commanders for South East Asia or China. In practice, U.S. forces were usually overseen by General Joseph Stilwell, the Deputy Allied Commander in China; the term "CBI" was significant in logistical, material and personnel matters; it was and is commonly used within the US for these theaters.

U.S. and Chinese fighting forces in the CBI included the Chinese Expeditionary Force, the Flying Tigers,^[1] transport and bomber units flying the Hump, including the Tenth Air Force, the 1st Air Commando Group, the engineers who built the Ledo Road, the 5307th Composite Unit (Provisional), popularly known as "Merrill's Marauders", and the 5332d Brigade, Provisional or 'Mars Task Force', which assumed the Marauders' mission.