Regarding the reliability of a revolver vs semi auto, I always thought a revolver is reputable far more reliable.

Yes military do use semi autos. Far higher cartridge capacity in a SA magazine.

Military personnel if disciplined are also expected to diligently and regularly clean their semi auto handguns.

Military handguns are very much a self defence, emergency weapon.

A revolver is simpler to use. And safer. No safety. And the hammer on an empty chamber is very safe to carry.

I really can't see a semi auto being more reliable than a good revolver.

However, for non animal use, I'd carry a semi auto.