Historical Organization
U.S. Army
U.S. Army
Details
Organization Timeline
Executive Order 9066 enables mass removal and incarceration
📅 19 February 1942President Roosevelt signed Executive Order 9066, authorizing military exclusion zones that enabled the forced removal and incarceration of Japanese Americans. More than 120,000 people of Japanese...
Allied forces land at Leyte as Filipinos resist occupation
📅 20 October 1944U.S. and Filipino forces landed at Leyte, beginning a campaign to retake the Philippines from Japan. Filipino guerrillas had gathered intelligence, rescued Allied personnel, and resisted occupation...
Philippines becomes formally independent under unequal U.S. economic terms
📅 4 July 1946The United States formally recognized Philippine independence after decades of colonial rule and a devastating Japanese occupation. The Bell Trade Act and related arrangements tied reconstruction...
Operation Attleboro begins northwest of Saigon
📅 14 October 1966U.S. and South Vietnamese forces launched a large search operation in Tây Ninh Province. It expanded into a major campaign around War Zone C, a border region with civilian communities and cross-border...
Operation Cedar Falls begins in the Iron Triangle
📅 8 January 1967U.S. and South Vietnamese forces entered the densely populated Iron Triangle northwest of Saigon. The operation included the destruction of homes and forced relocation of residents, illustrating how...
Operation Junction City opens in War Zone C
📅 22 February 1967U.S. forces launched a large airborne and ground operation near the Cambodian border, aiming to engage People’s Army and National Liberation Front forces. It demonstrated the scale of U.S....
Intense fighting begins around Đắk Tô in the Central Highlands
📅 3 November 1967U.S. and South Vietnamese troops fought People’s Army units across ridge lines near Đắk Tô. U.S. artillery and air strikes struck positions near its own troops as well as opposing forces. The battle...
U.S. soldiers massacre civilians at Mỹ Lai
📅 16 March 1968U.S. troops killed hundreds of unarmed civilians in Sơn Mỹ village, mostly women, children and older people. The crime was initially concealed and became public in 1969. My Lai exposed the human...
U.S. forces open a ground corridor to the Khe Sanh base
📅 8 April 1968The 1st Cavalry Division linked up with Marines after months of siege and air supply. The corridor ended the encirclement, but did not erase the costs of the battle to nearby communities or settle the...
Ronald Ridenhour reports the Mỹ Lai killings to officials
📅 29 March 1969U.S. veteran Ronald Ridenhour sent letters to members of Congress and senior officials after hearing accounts of the killings at Mỹ Lai from soldiers. His intervention helped trigger investigations....
U.S. soldier kills civilians in Panjwai villages
📅 11 March 2012A U.S. Army staff sergeant shot civilians in Panjwai, killing 16, including nine children, according to Afghan officials and Amnesty International. The killings intensified demands for...