Many of the Japanese admirals tasked with winning the Pacific didn’t think Midway looked pretty good. When Yamamoto’s officer proposed the invasion plan to the Naval General Staff which was specifically charged with developing the overall strategy for the war with America, it was initially rejected for three reasons:
-
The successful Japanese invasions in the previous month were carried out under the protection of land-based airpower from captured bases and then the air umbrella was pushed forward. Midway was in range of American heavy bombers based out of Hawaii, but too far for Japanese fighter aircraft to fight back. At this stage of the war, carriers couldn’t conduct extended operations in enemy waters.
-
Even is Midway were captured, it was unlikely that it could be supported, especially from sub attacks. The Japanese merchant marine was already overextended. One major problem Japan had was that a lot of its prewar civilian shipping needs were carried by what became neutral or Allied ships. Japan lost a significant amount of shipping capacity simply by declaring war.
Because Midway was small, it couldn’t hold that many aircraft and Japan lacked the resources to supply sufficient aviation fuel, a fact which Yamamoto’s proposals ignored.
- Naval General Staff officers didn’t believe that the US would be provoked as Yamamoto assumed because it would be easier for the US to reclaim it after the Japanese logistics failed.
It was only after Yamamoto again went to his threat to resign (which he has already done before Pearl Harbor) that the General Staff caved and agreed to the plan.
Velocity was correct, and the Japanese didn’t have the logistics to support it, as outlined above.
Both sides were short on tankers but the Japanese were in worse shape and they were desperately needed closer to Japan.

By actually invading. Otherwise there was no reason for assault troops to be there in the first place. The idea was to invade Midway, win (fat chance) and thus force the US to respond. With the distraction of the Aleutians going on as well, it was hoped the IJN could ambush the US Navy and eliminate a threat, as well as getting a (very) advance base against Hawaii.
Needless to say, IJN Naval High Command had scored some really good weed, because almost none of that was even remotely feasible.
Shattered Sword demonstrates that the Aleutians operation was actually a simultaneous plan and not a distraction. The proposal for Midway came from Yamamoto and the Naval General Staff added the requirement for the Aleutian operation as well.
Parshall and others have discussed how Yamamoto as the CIC of the Combined Fleet usurped strategic planning from the Naval General Staff by threatening to resign twice. While Yamamoto has a great reputation among some as a forward thinker, Midway was his baby.
Careful research has failed to uncover what weed he was smoking, but it certainly was the best.
There were a couple of interesting time periods prior to the war and in the war where better strategic planning needed to have happened, and the spring of 1942 was one. Once the initial objectives were met, the various branches of the Imperial military was trying to decide which direction to attack. There was the Burma Campaign, some people advocated going into India, others wanted to invade Australia, some just wanted to cut the line of communications between Australia and the US, and Yamamoto (and some others) wanted to go into Central Pacific, including Hawaii. All of these occurred while they were not able to defeat the Chinese.