USS Iwo Jima (LPH-2) was the lead ship of her class and type and the first amphibious assault ship to be designed and built from the keel up as a dedicated helicopter carrier. She carried helicopters and typically embarked USMC elements of a Marine Amphibious Unit (MAU)/later Marine Expeditionary Unit (MEU) principally the Aviation Combat Element (ACE) to conduct heliborne operations in support of an amphibious operation. There was no well deck to support landing craft movement of personnel or equipment to/from shore. Iwo Jima was the second of three ships of the United States Navy to be named for the Battle of Iwo Jima, although the first to be completed and see service.

Operation Starlite was the first major offensive action conducted by a purely U.S. military unit during the Vietnam War from 18 to 24 August 1965. The operation was launched based on intelligence provided by Major general Nguyen Chanh Thi, the Army of the Republic of Vietnam (ARVN) I Corps commander. III Marine Amphibious Force commander Lieutenant General Lewis W. Walt devised a plan to launch a pre-emptive strike against the Viet Cong (VC) 1st Regiment to nullify their threat to the vital Chu Lai Air Base and Base Area and ensure its powerful communication tower remained intact.