What counts as combat PT?

Urban land navigation as you run to various points.

What physical or critical thinking tasks does your unit, company platoon or team expect to need to make in combat?
What exercise, route, task set up will practice and enhance those task skills?

We did a platoon "movement" for PT. Each PLT had to move 4 cans of ammo, 2 cans of water over a fixed course that included getting over a low wall, high wall, up and over the company HQ building roof and back down ( got yelled at for that one),under a wire obstacle. Once the "resupply" was done, the PLT had to move a casualty and his equipment to a CCP some 4 miles away across well traveled path and broken terrain..
We did Friday night fights, each Plt put up a fighter and only Army combatives would be used as trained in level 1-3...No small joint manipulation, no strikes to the face or vital organs.
We did Bradley track races... The Crew had to remove track, replace 4 shoes. Remaining platoon members had to "resupply" the track shoes from a "distant" supply point, return those and water cans.

Imagination and some thought are the only limitations.

I'm MI. Our combat PT was sprinting to an air conditioned office.