The squadron was originally formed on May 1, 1942 at Marine Corps Air Station Ewa, Hawaii as Marine Scout Bombing Squadron 233 flying the SBD-4 Dauntless. They deployed overseas in December 1942 on board the seaplane tender USS Wright and first debarked at Espiritu Santo. From December 25, 1942 until February 8, 1943 they operated from Henderson Field on Guadalcanal as part of the Cactus Air Force. They were reorganized as Marine Torpedo Bombing Squadron 233 on May 22, 1943 but the official re-designation of the squadron did not take place until June 13, when they had returned to the United States. From August until October 29, 1943, the squadron again operated from Henderson Field. Following the Battle of New Georgia the squadron was moved to Munda in New Georgia to conduct raids that would help cut off the Japanese garrison at Rabaul. While in the New Georgia area, they also operated from Piva Airfield and Torokina Airfield. On February 14, 1944, Avengers from VMTB-233 and VMTB-232 took part in a mission to sow mines in Simpson Harbor at Rabaul. The TBMs were to fly up in three groups of eight each at the slow speed of 160 knots to drop their parachute-mines, weighing 1,600 pounds a piece. The first group lost one plane. The commanding officer tried to radio the other TBFs to warn them to turn back but he couldn't make radio contact. The second group lost two planes. The third group was immediately found by searchlight and anti-aircraft guns while flying at 800 feet over the water and had five aircraft shotdown. A total of six planes and eighteen men were lost during the attack. Four of the eighteen men survived the loss of the six TBFs that evening. Of the four, none survived captivity. One was murdered at Tunnel Hill, two died of starvation / disease / medical neglect, and a fourth was murdered by the Japanese Navy sometime in April. In April 1944, they returned to the United States and were stationed at Marine Corps Air Station Santa Barbara, California. During their time at MCAS Santa Barbara they trained as part of the Marine Corps' new escort carrier program. They were assigned to Marine Carrier Air Group 1 where they were partnered with VMF-511 on the USS Block Island. The squadron left the West Coast on March 20, 1945. During this time the squadron's commanding officer, Major Robert Vaupell, was killed in a crash in February 1945. VMTB-233 saw its first action during the Battle of Okinawa on May 5, 1945 when it conducted rocket and bomb runs against Japanese strongpoints in the vicinity of Naha. Their mission alternated between close air support for the Marines fighting on the ground and strikes against Sakashima Gunto, a kamikaze base complex some 175 miles southwest of Okinawa on Miyako Island In mid-June, the Block Island was relieved from the coast of Okinawa and ordered to Leyte in the Philippines. From here they supported the early stages of the Australian 7th Divisioninvasion of Balikpapan in July 1945. They returned to Leyte on July 4 and would not see combat for the rest of the war. Still aboard the Block Island when WWII ended, VMTB-233's final missions were flown in support of the Japanese surrender of Formosa. Following World War II, the squadron returned to the United States, was briefly assigned to Marine Aircraft Group 46 and was finally deactivated on March 1, 1946 as part of the post war draw-down of forces. They were quickly reactivated later in 1946 as part of the Marine Air Reserves flying out of Naval Air Station Norfolk, Virginia. In October 1951 the unit was activated for the Korean War, but it did not see action during the conflict. They were officially deactivated in 1969.
