Yes, I do know that. The .38 that was in use at the time was not stopping the Moros. The .45 Long Colt in Single Action Army revolvers was getting the job done. So Browning developed the .45 ACP for his 1911 semi-auto.
I refer to it as “American Commie Popper” because of the abbreviation “ACP” (Automatic Colt Pistol) and it was used in Korea and Vietnam - where we were WERE “popping Commies”.
My EOD team carried em in Desert Storm as well .... Took scoped M1A’s vs M4’s and 1911A1’s and a M82A1 Barrett tossed in for good measure. Never felt under gunned or out ranged .....
Standardization and specialization are IMHO for insects, polidiots and presstitutes.
DOD should be prepared to issue, train and support whatever tools are needed to defeat the threats to this nation, domestic and foreign.
Hope yer well Hale !
Stay safe !