Answer:
the Battle of Iwo Jima
Step-by-step explanation:
American forces invaded the island on February 19, 1945, and the ensuing Battle of Iwo Jima lasted for five weeks. In some of the bloodiest fighting of World War II, it's believed that all but 200 or so of the 21,000 Japanese forces on the island were killed, as were almost 7,000 Marines.