I study WW2. To expand on that: - Correct. Before the Doolittle Raid, they weren't cooperating with each other. Things totally changed after Tokyo was bombed.

I study WW2. To expand on that: - Correct. Before the Doolittle Raid, they weren't cooperating with each other. Things totally changed after Tokyo was bombed. - One of the reasons for the Pearl Harbor bombing was because the Japanese navy had nothing to do, while the army was engaged in China. But had the navy and army been coordinated, they could have occupied Hawaii. - before Guadalcanal, the US Navy and Marines weren't very coordinated. After the Marines were abandoned there without half of their equipment and supplies, a protocol was developed that improved communications. Until today, the Air Force and Army fight over who can operate aircraft on behalf of the Army.