<Li> 132nd Anti-Aircraft Defense Unit </Li> <Li> 141st Anti-Aircraft Defense Unit </Li> <Li> 149th Anti-Aircraft Defense Unit </Li> <P> During the night, Vice Adm. Marc A. Mitscher's Task Force 58, a huge carrier force, arrived off Iwo Jima . Also in this flotilla was Adm. Raymond A. Spruance, overall commander for the invasion, in his flagship, the heavy cruiser USS Indianapolis . "Howlin' Mad" Smith was once again deeply frustrated that Mitscher's powerful carrier group had been bombing the Japanese home islands instead of softening up the defenses of Iwo Jima . Mitscher's fliers did contribute to the additional surface - ship bombardment that accompanied the formation of the amphibious craft . </P>

How many japanese soldiers surrendered at iwo jima