16th Antiaircraft Artillery Battalion

The 16th Antiaircraft Artillery Battalion was commissioned on 10 November 1942 at Johnston Island. Personnel and equipment for the new battalion came from the re-designation of the Marine Defense Force, Naval Air Station Johnston Island. The battalion remained at Johnston Island providing air defense until 22 March 1944 when it was transferred to Kauai, Territory of Hawaii. Not all of the battalion departed Johnston Island as approximately 450 personnel remained for defensive purposes.[1]

As the war progressed, the Marine Corps removed coastal artillery from the defense battalions in order to form additional heavy artillery units for the Fleet Marine Force.[4] Because of the divestiture of the coastal defense mission, the battalion was re-designated as the 16th Antiaircraft Artillery Battalion on 19 April 1944. For the next few months, the battalion had to grow back to regular strength and continue training. On 11 November 1944, the battalion was transferred to the 1st Provisional Antiaircraft Artillery Group prior to deploying for combat operations in the Western Pacific.

The battalion departed Hawaii on 26 December 1944 arriving at Tinian where it set up camp and gun positions. On 12 March 1945, the assault echelon of the battalion departed Tinian and sailed towards Okinawa, Japan for the upcoming amphibious landing. The assault echelon disembarked naval shipping on 8 April 1945. The rest of the battalion arrived in a number of different waves during May 1945. During the Battle of Okinawa the 16th AAA Battalion was one of four AAA battalions that comprised the 1st Provisional AAA Group.[5] During the battle they were emplaced near Yontan Airfield in order to protect the airfield against Japanese air raids and kamikaze attacks. .[6] Two Marines from the battalion were killed in action during the battle and another thirty two were wounded in action.[7] The battalion remained on Okinawa providing air defense until 20 September 1945.

On 22 October, personnel of the 16th AAA Battalion embarked on the USS Meriwether (APA-203) and sailed for the United States. The battalion arrived at San Diego, California on 8 November 1945. On 27 November 1945 the 16th Antiaircraft Artillery Battalion was decommissioned.[4]