What you say is true but, We're only now getting to the point an exoskeleton might be realistic. They still aren't ready for wide deployment I don't think(yet). But using the past as a guide for this isn't realistic. It wouldn't surprise me much to see a small squad of mech suited soldiers using combat robots as weapons for special operations though.
The main use an exoskeleton would have is to increase the load someone can carry. The best use would be to outfit 1 soldier in a squad with it so they can carry heavy weapons, like a .50 cal MG or automatic grenade launcher. But in most cases it's better in almost every way to use a small (or large and armored) vehicle to accomplish the same. It wouldn't be special forces necessarily, it would be for mountain, jungle, or urban operations. Power requirements & reliability would make it tricky for a long time, and being dedicated for tricky environments like that would only make it harder.
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