Interesting article on the 45acp vs 9mm..

https://www.concealedcarry.com/national/marine-operators-have-settled-the-9mm-vs-45-debate/

Excerpt from article:

For Marine special operators, the never-ending debate over whether the 9mm or .45-caliber round is the more powerful bullet has been settled.

Previously, the classic .45-caliber Colt 1911 was one of three pistols that Raiders were allowed to carry, but now the 9mm Glock 19 is the only pistol that Marine special operators can take into battle, said Maj. Nick Mannweiler, a spokesman for Marine Corps Forces Special Operations Command.

“We put our money behind the 9mm round fired by an extremely well-trained marksman carrying a Glock 19,” Mannweiler told Marine Corps Times.

This article discusses the pros and cons to a degree....