A guy from my neighborhood was in his 50s in the Guard as a truckdriver. He was mobilized and sent to Iraq. He got shot by sniper while driving. There really isn't a non combatant role in a war zone, just different levels of risk.
They need people to building drones ,medical ,equipment , camouflage netting, defences , mechanics , a lot of other things you could do to help that aren’t combat rolls now a day . Selling war art is popular right now all the proceeds go to the troops to buy more gear .
