CAVman, didn't a lot of units in Vietnam actually have a "calling card" they left behind after whackin a bunch of bad guys and other identifiable stuff, or is that urban myth?
From pictures I have seen and talks with friends who served in Afghanistan, it seems like the patrol bases, FOBs etc, at least on the Canadian side, are pretty obvious to see. It doesn't mean a newspaper should print how many MGs are on the perimeter, or when they change watch, but they all seem to be a rather...prominent terrain feature, and the guys do an awful lot of presence patrols and interacting with the locals.
What I mean is...the bad guys know where the bases are. And the soldiers make themselves very obvious, on purpose.
How does it impact things if the scumbags know it's this battalion of this regiment, and not a different one?