I don't have my reference at hand so this is off the top of my head. Colt New Services were purchased for the Northwest Mounted Police and foe Canadian military unit during the Boar War and during World War 1. I think both .455 Webley (elly) and .45 Colt were purchased. I know that .45 Colt revolvers were in use during World War 2 as I have a couple of Canadian military boxes of .45 Colt made during WW2.
Air Dropable AND Ground Recoverable
Necat Omnes! Deus Suos Agnoscet.
The application of the proper amount of high explosives can solve any problem.