Correction it was the Philippine Insurrection were the regulars were equipped with .38 caliber revolvers, but the Phillipine constabulary were issued .45 Colt Peacemakers. These ( the .45 revolvers) were considered obsolete by the Army .
It was in fighting with the guerrillas that the Army realized that against a fanatic enemy at close quarters the .38 revolver cartridge ( NOT the .38 Special) just didn’t cut it.
The “War Department “ then came out with a “request for an improved sidearm”. The Browning design was an improvement on an earlier Browning pistol in the same cartridge.
Just thought you would like to know. 8*)
Yep. And General Pershing had just the answer for that problem, and it was NOT Mr. Browning's M1911 .45 auto.