26 March - 18 April 1942: “Operation C” – The Raids in the Indian Ocean:
Nagumo's force departs Staring Bay for the Indian Ocean Operation. KAGA is unable to participate due to repairs still in progress at Sasebo.
Arrive at Kure. Once back in Japan, her air crews are not immediately reconstituted. This was due to the fact that transfer of personnel to other units had already been scheduled before Coral Sea to replace other vacancies and transfers. Further, at this time, the rule of `one aircrew per aircraft' generally applied, and losses in either one could upset the balance. Such obstacles and shufflings could not be easily overcome or reversed. Since the Japanese felt they had sunk two carriers and won the Battle of Coral Sea, such measures seemed unnecessary. ZUIKAKU had thus also been dropped with her battle-damaged sister from the first phase of the Midway Operation line-up.