Marine Corps inspector general suspended pending third investigation into AAV accident May 3 Maj. Gen. Robert F. Castellvi, the then -outgoing commanding general of the 1st Marine Division, speaks during a change of command ceremony held at Marine Corps Base Camp Pendleton, California, Sept. 22, 2020. (Cpl. Jailine L. AliceaSantiago/Marine Corps) At the end of April, the Marine Corps suspended Maj. Gen. Robert Castellvi, the inspector general of the Marine Corps and former 1st Marine Division commander, from his duties pending the outcome of a third investigation into a deadly sinking accident. Prior to taking on the role as inspector general of the Marine Corps, Castellvi was the commander of the 1st Marine Division, responsible for the training and readiness of the Marines of 3rd Amphibious Assault Battalion and 1st Battalion, 4th Marines.