American Marines are invading Atta Island.
May 11-30, 1943, the island was fiercely battled between the Japanese garrison and the US invasion forces, as a result of which the island was captured by the American marines of the US Navy.
In the US Marines photo, an LCVP assault boat from attack transport USS J. Franklin Bell (APA-16).
Location: Aleutian Islands
Date: May 1943