<P> 21,060 total men under arms Lieut . General Tadamichi Kuribayashi, commanding Colonel Tadashi Takaishi, chief of staff Army </P> <Ul> <Li> 109th Division <Ul> <Li> 145th Infantry Regiment </Li> <Li> 17th Mixed Infantry Regiment </Li> <Li> 26th Tank Regiment </Li> <Li> 2nd Mixed Brigade </Li> </Ul> </Li> </Ul> <Li> 109th Division <Ul> <Li> 145th Infantry Regiment </Li> <Li> 17th Mixed Infantry Regiment </Li> <Li> 26th Tank Regiment </Li> <Li> 2nd Mixed Brigade </Li> </Ul> </Li> <Ul> <Li> 145th Infantry Regiment </Li> <Li> 17th Mixed Infantry Regiment </Li> <Li> 26th Tank Regiment </Li> <Li> 2nd Mixed Brigade </Li> </Ul>

At iwo jima how did the japanese defend the island