Leaving aside drones and satellites and "security" contractors, in a sense all wars are fought remotely now.
Those responsible for starting them never do any fighting and they'r'e usually at least a safe distance away (maaaannnnn).
At my Dad's 70th birthday I got talking to a Canadian libertarian that had strayed into lolbertarian territory.
He told me, with a straight face, that the USA should scrap it's navy "And then if a war stars they could just rent an aircraft carrier from Russia, hire some sailors from Finland, some pilots from Japan, and they'll all fight together if they pay them well enough".