Liberation Day on the U.S. territory of Guam is an annual commemoration of the invasion by U.S. military forces on July 21, 1944, which ended the Japanese occupation that had begun in 1941. Begun in 1945, it is Guam's largest celebration. Festivities include a queen contest, summer carnival, fireworks display, and mile-long parade on Marine Corps Drive in Hagåtña from Adelup to Paseo de Susana, as well as solemn memorials and visits to massacre sites. It is organized by the Guam Island Fair Committee.