The Vermac, Special Operations Field Marshal, and Veterancy Ability

Field marshals bring a unique veterancy ability to every unit across the entire faction. For example, infantry within special operations will capture territory faster once they hit field marshal one. Vehicles will have access to camouflage. Team weapons will haveaccess to munitions. So it's a choice that you can make as early or as late into the game as you like. But in doing so, you're esentially setting an additional theme for your army based on the play style. I personally, i tend to go for special operations because i like the aggressiveness of it.