Divided command and contradictory signals from Japan

Japan's army and navy were pursuing a campaign that neither service was organized to sustain, while competing with each other for power. Divisions inside each service made coordination more complicated. Some army factions opposed war with the United States, while the faction associated with Tojo sought colonial territory as a way to dominate the region. These were broad groupings containing further factions, with occasional common ground across their institutional boundaries. Their differences also appeared in the tactics used by Japanese forces in China and Korea compared with forces sent into Southeast Asia. Allied intelligence could receive peace signals from one faction and demands for continued war from another without knowing which group actually controlled policy. Guadalcanal also exposed Allied command failures. The lesson drawn is to settle command responsibilities and cooperation before attempting a campaign that depends on them. A single dominant Japanese faction is briefly considered as a counterfactual, with the qualification that establishing its supremacy might itself have caused civil war.