The next battle for the regiment was at Tinian on 25 July and joined the rest of the 2nd Marine Division as it elbowed its way down the island until reaching the escarpment that marked Tinian's southern tip on 1 August. It took three days of tough fighting to reduce the final enemy stronghold. During that fighting, PFC Robert L. Wilson covered a live grenade with his body to protect his comrades and earned a posthumous Medal of Honor. The regiment lost 34 killed and 165 wounded in ten days on Tinian.