Moenie,
You are aware that the US Military has used revolvers in WW1, WW2, Cold war era, etc.? Both Colt and S&W produced numerous models and sizes as specified / required for various branches... designed for... COMBAT. Not just Colt SAA's and Schofields in the old West, but many models and frame sizes of double actions, .45's, .41's and .38 Special's from Teddy Roosevelt's era foward.
If you don't believe us, research it and or go visit some Military Museum's, The SEAL Museum in Florida, etc. and you will see S&W K frame model 10's, 15's, Colt New Services, Colt .38 Double Actions, Colt Model of 1909 .45. ...Model of 1917 Revolvers—Colt and Smith & Wesson .45 ACP., S&W “Victory Model” ...Colt “Commando” , USAF M13 “Aircrewman” , Ruger “Service Six” Military Revolvers.