Continuing... I don't think it was the troops "welfare" those two general were concerned about, but maintaining their troops willingness and ability to fight. MacArthur made his fair share of blunders that adversely affected his troops welfare, as did Patton. One thing is true for both generals - They were either loved or cursed by their men, there was very little in between. As USMCPrice has pointed out, Chichi Jima had some 3,000 more Japanese troops on it than Iwo Jima. Further, Iwo Jima had three airfields on it as opposed to Chichi Jima's one. Adding to that fact was that the terrain of Chichi Jima was considered to be unacceptable for the construction of more airbases. First, it is not Corbett, but Corlett, specifically Major General Charles H. "Cowboy Pete" Corlett. Second, Major General Corlett was an Army general - He was not a Marine general. Third, that would make it "intra-service" rivalry. Not "inter-service" rivalry. The intra-service rivalry was between those Army personnel fighting in the PTO vs. ETO, those in the ETO viewed the Pacific as the "bush leagues", whereas the "major league" was fighting was against the Germans. Fourth, the ETO generals had already conducted several large amphibious operations in the Mediterranean Theater, and had been soing so for almost as long as those in the Pacific Theater. Thus, the American generals were by no means inexperienced in conducting large amphibious operations.