Yoshio Tachibana was a lieutenant general in the Japanese Imperial Army during World War II. He was commander of the Japanese garrison in Chichijima, Ogasawara Islands, and was later tried and executed for the Chichijima incident, a war crime involving torture, extrajudicial execution and cannibalism of American prisoners of war.

Chichijima (父島) is the largest and most populous island in the Bonin or Ogasawara Islands. Chichijima is about 240 km (150 mi) north of Iwo Jima. 23.5 km2 (9.1 sq mi) in size, the island is home to about 2,120 people (2021). Connected to the mainland only by a day-long ferry that runs a few times a month, the island is nonetheless organized administratively as the seat of Ogasawara Village in the coterminous Ogasawara Subprefecture of the Tokyo Metropolitan Government. Together with the Volcano and Izu Islands, it makes up Japan's Nanpō Islands.