"Nope. I know and think I understand MARSA... Although I think it is frequently misused. (From my understanding of how it is defined in the GP.)
I'm not military (I am retired military) but I fly contractor airplanes and I get offered MARSA frequently. We are not equipped/briefed or part of a group/formation that has each other's frequencies to participate in MARSA, although I hear many other contractors doing it. (And [personally] I think accepting MARSA with a UAV is crazy... but that's another subject.)"
Gabilane, I think you're spot on here - US application of MARSA procedures (I say "US" because you mention you're in Iraq) are
very specific (follow this link to the US ATC manual, the 7110.65T and search for MARSA).
http://www.faa.gov/documentLibrary/media/Order/ATC.pdf
MARSA is never supposed to be "offered" to somebody!