Halo 2 > Halo 3 > Halo 3 ODST > Halo Reach > Halo CE
Based on campaigns.
OP check to see if it's already in your armoury, if not, then, IDK
Is it still possible to get it via vidmasters if you dont have it?
Oh and a word of advice OP, all the kids are wearing recon now so wearing it doesn't make you look special anymore. On fact, every match I come across there's at least two or three people with full recon