Nobutake Kondō was an admiral in the Imperial Japanese Navy during World War II. As commander of IJN 2nd Fleet, the Navy's principal detached force for independent operations, Kondō was regarded as second in importance only to Admiral Isoroku Yamamoto.

The Combined Fleet was the main sea-going component of the Imperial Japanese Navy. Until 1933, the Combined Fleet was not a permanent organization, but a temporary force formed for the duration of a conflict or major naval maneuvers from various units normally under separate commands in peacetime.