Under command of Admiral R. A. Spruance, Commander Fifth Fleet, a powerful force of the Pacific Fleet, including carriers, fast battleships, cruisers, and destroyers, attacked the Western Carolines. On 30 and 31 March, carrier-based planes struck at the Palau group with shipping as primary target. They sank 3 destroyers, 17 freighters, 5 oilers and 3 small vessels, and damaged 17 additional ships. The planes also bombed the airfields, but they did not entirely stop Japanese air activity. At the same time, our aircraft mined the waters around Palau in order to immobilize enemy shipping in the area. Part of the force struck Yap and Ulithi on 31 March and Woleai on 1 April.
Although the carrier aircraft encountered active air opposition over the Palau area on both days, they quickly overcame it. Enemy planes approached the task force on the evening of 29 March and 30 March but were destroyed or driven off by the combat air patrols. During the three days' operation our plane losses were 25 in combat, while the enemy had 114 planes destroyed in combat and 46 on the ground. These attacks were successful in obtaining the desired effect, and the operation in New Guinea went forward without opposition from the Western Carolines.