could not defend its conquests, and its industrial base could not strengthen its navy. To cut off China from Allied aid, it went into Burma and captured Rangoon on 8 March 1942, cutting off the Burma Road. Moving north, the Japanese took Tounggoo and captured Lashio in northern Burma on 29 April. The British, primarily concerned with India, looked to Burma as the main theater of action against Japan and wanted Chinese troops to fight there. The United States conjured up visions of millions of Chinese soldiers who would hold the Japanese then throw them back, while providing close-in airbases for a systematic firebombing of Japanese cities. Chinese Nationalist leader Chiang Kai-shek realized it was all fantasy. On the other hand, there were vast sums of American dollars available if he collaborated. He did so and managed to feed his starving soldiers, but they were so poorly equipped and led that offensive operations against the Japanese in China were impossible. However, Chiang did release two Chinese armies for action in Burma under Stilwell. Due to conflicts between Chiang, the British, Stilwell, and American General Claire Chennault, as well as general ill-preparedness against the more proficient Japanese army, the Burma defense collapsed. Stilwell escaped to India, but the recovery of Burma and construction of the Ledo Road to supply China became a new obsession for him. "On April 14, 1942, William Donovan, as Coordinator of Information (forerunner of the Office of Strategic Services), activated Detachment 101 for action behind enemy lines in Burma. The first unit of its kind, the Detachment was charged with gathering intelligence, harassing the Japanese through guerrilla actions, identifying targets for the Army Air Force to bomb, and rescuing downed Allied airmen. Because Detachment 101 was never larger than a few hundred Americans, it relied on support from various tribal groups in Burma. In particular, the vigorously anti-Japanese Kachin people were vital to the unit's success." Detachment 101's efforts opened the way for Stilwell's Chinese forces, Wingate's Raiders, Merrill's Marauders, and the counter-attack against the Japanese Imperial life-line. Allied command structure U.S. and Allied land forces US forces in the CBI were grouped together for administrative purposes under the command of General Joseph "Vinegar Joe" Stilwell. However, unlike other combat theaters, for example the European Theater of Operations, the CBI was never a "theater of operations" and did not have an overall operational command structure. Initially U.S.