At 0840 on June 15, 1944, initial waves of the 2nd and 4th U.S. Marine Divisions stormed onto a narrow beachhead on Saipan. The enemy guns were ranged-in on the beaches and shells rained down with deadly effect. Marine units, supported by Naval and Army Air Corps bombardment, and joined by the U.S. Army's 27th Infantry Division, waged savage warfare. For most of the soldiers, seamen, and airmen it was yet another invasion. For many it would be their last. For the world it was the beginning of the end of the Pacific War.

The Marianas Campaign of World War II was the most decisive battle of the Pacific Theater. With Saipan secured on July 9th, U.S. Forces were able to cut off vital Japanese supply and communication lines, and American B-29 bombers moved within range of the Japanese homeland. The end of the war with Japan followed 14 months later.