2nd Battation of the 151st Infantry, along with elements from the Cannon and anti-tank companies, moved to Corregidor, 24 February, to clear the remaining Japanese defenders from the Rock. The same battalion assaulted and captured Caballo Island, 27 March, and Fort Drum on El Fraile Island, 13 April. 1st Battalion 151st Infantry captured Carabao Island on 16 April. Supporting operations in March included a major push against dug-in Japanese defenders in the mountainous terrain between Fort Stotsenburg and Mount Pinatubo by the 38th Division Advance (consisting of the 149th Regimental Combat Team (RCT), the 169th RCT, and all the 38th Division's artillery). Once the enemy was broken, combat elements of the 152nd Infantry pushed north from San Felipe to Palauig Bay and east from Botolan along the Capas Trail cutting the enemy's withdrawal route.