drgondog
Major
Land based with the Marines, it could have been deployed in place of the Marine Wildcats and Buffalos at Midway . With the Fleet in place of Wildcats.
Impossible for F4U and P-51 to be at Midway based on the development process prior to Dec 7, 1941.
The production F4U wasn't flown until June 25, 1942.
The Contract for the P-51A was not let until June 23, 1942.
The AAF was so desperate to get the P-51 into combat that they didn't start evaluating the XP-51 until March 1942 at Wright Pat, some four months after delivery.
Only the Mustang I was in production in sufficient numbers had the AAF snatched them from RAF before Pearl Harbor, deployed in one to two squadron strength for training, and cunningly sent immediately to Hawaii/Midway in time for the battle. Would have to replace a P-40 FG, so as to capitalize on Allison maintenance experience
The P-51-1, which later became F6, first flew in May 1942.
The ONLY possibility for a P-51 to fight at Midway would have been if the AAF a.) recognized the value immediately and tested immediately for tactical evaluation, and b.) acceptable modifications immediately acted upon by NAA, and c.) diverted them to a ready to deploy P-40 FG, and d.) deployed them in the March 1942 timeframe to Hawaii.