Has anyone seen this happen in WITP ? As a Japanese player I've never seen this, but been close, maybe you Allied players might have ...
Taken from wikipedia ...
The term "ace in a day" is used to designate a fighter pilot who has shot down five or more airplanes in a single day. The most notable is Hans-Joachim Marseille of Germany, who was credited with downing 17 Allied fighters in just three sorties over North Africa on September 1, 1942, during World War II. The highest number aerial victories for a single day was claimed by Emil Lang, who claimed 18 Soviet fighters on November 3, 1943. Erich Rudorffer is credited with the destruction of 13 aircraft in a single mission on October 11, 1943. Numerous other Luftwaffe pilots also claimed the title during World War II.
On December 5, 1941, the leading Australian ace of World War II, Clive Caldwell, destroyed five German aircraft in the space of a few minutes, also in North Africa. He received a Distinguished Flying Cross for the feat.
During World War II, 68 U.S. pilots—43 Army Air Forces, 18 Navy, and seven Marine Corps—were credited the feat, including David McCampbell, who claimed seven Japanese planes shot down on June 19, 1944 (during the "Marianas Turkey Shoot"), and nine in a single mission on October 24, 1944. Others included Joe Foss, Chuck Yeager and Oscar Francis Perdomo, the last US "ace in a day"[10].
Other pilots to have claimed "ace in a day" status during World War II include Antoni Głowacki of Poland, during the Battle of Britain, and Jorma Sarvanto of Finland, during the Winter War. Captain Hans Wind of HLeLv 24, Finnish Air Force, scored five kills in a day a remarkable five times during the Soviet Summer Offensive 1944, a total of 30 kills in 12 days, of his final tally of 75.