Interesting, so were the JAG guys out there in the field with you taking fire? And while taking fire they were saying, had dont kill the enemy this way, let's kill them this way?
Well, at Platoon level, no, unless your mission is really sensitive and they attached a JAG on your platoon, but at Company level, yes.
When you are in a platoon fighting off your war individually, you have a lot of latitude on a lot of stuff, where you go, where you put your troop and stuff like that, calling support is NOT one of them. When you call support mission, you raise Company HQ, and they divert it to their FAC (Forward Artillery Control) if you are requesting tube support, and JTAC if you want an air support. So if I want, say 155mm target a certain area, in a platoon leader position, I can't do that, I have to call my CO and his Company HQ and ask for it, that's where the leadership element in a platoon located, CO, XO, First Sgt, RTO and Medic it also has the support element which they will have 1 or 2 FAC and a JTAC team on standby.
My CO will then ask the FAC or JTAC to get on the fire mission, you don't need to go thru your CO every time, sometimes you can talk directly to the FAC or JTAC if your situation is urgent, no point going back and forth relaying message with the RTO, they can just pick up the phone (well the PRC equipment) themselves. Say if the call sign of the FAC is heavy metal, you ask over the net and say "I want to talk to Heavy Metal actual" that means I want to talk to the FAC, instead of the RTO.
But if your platoon size mission is sensitive enough, say you are about to capture a top tier enemy target, then yes, they will attach a FAC or JTAC team to your platoon and it will be with the platoon leader and platoon sergeant and so on, and if you are taking hit, they took hit with you.
But if you are at Company and your company HQ is under attack, then yes, there are always FAC and JTAC officer with a company, and they will be in the Boonie like the rest of us.
And I know it's strange, but yes, even under fire with you, they will still deny your request on your target, even if they too are under fire..