https://en.wikipedia.org/wiki/Thach_Weave
Developed by LCDR John S. "Jimmy" Thatch, USN and employed by his squadron VF-3 during the Battle of Midway.
Six Grumman F4F Wildcats were attacked by 15 to 20 Japanese Zeros. VF-3 shot down four Zeros and lost one Wildcat.
It was the first loss in an air-to-air engagement for the Japanese.