Pretty much every use of .45 ACP by another country's military that I know of was in a 1911 of some sort. In the past there were several other countries that adopted the 1911, two even went so far as to buy licensing and tooling from Colt to build their own. Today there are a handful of countries that still issue 1911's as sidearms. I believe Greece still uses some older USGI pistols that were loaned to them long ago and the Philippines seems to be pretty big on them. Brazil also has IMBEL making 1911 copies for their military, though I believe they are chambered in 9mm.