Fair one, but many units don't have the personnel, equipment or resources to train themselves - mine certainly doesn't. I'm talking dispersed Corps personnel here....Regiments/Batallions are pretty much squared-away for that kind of thing.
Try C42's !! and then orders passed by mouth? radical I know "send 3 and fourpence were going to a dance" I think was the quote instead of "send reinforcements were going to advance" maybe we are just going too advanced in technology when it comes down to talking to each other in military terms, but what do I know.