Obtain one man army pro 6 challenge in the perks section. Requires a certain number of kills whilest using the perk.
See the related link below.
One Man Army - 2011 Brothers in Arms 1-1 was released on: USA: 13 July 2011
get a certain amount of kills (i think 200) with 1 man army
Dad's Army - 1968 The Man and the Hour 1-1 is rated/received certificates of: Australia:G UK:U (video rating) (1993)
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One Man Army - 2011 Will to Win 1-3 was released on: USA: 13 July 2011
One Man Army - 2011 To Hell and Back 1-8 was released on: USA: September 2011
I Really recommend ONE MAN ARMY
The New Adventures of He-Man - 1990 You're in the Army Now 1-45 was released on: USA: 1991
One Man Army - 2011 Fear Is Not an Option 1-2 was released on: USA: 20 July 2011
It depends on your playstyle, but my personal preferred method is to use 1 man army on all classes (except for one with Stinger and Cold blooded). Tar-21 Grenade Launcher, Frag Grenade, 1 Man Army, Danger Close, Sitrep Tar-21 Grenade Launcher, C4, 1 Man Army, Danger Close, Ninja Tar-21 Grenade Launcher, Claymore, 1 Man Army, Danger Close, Ninja M21EBR FMJ, Tactical Insertion, 1 Man Army, Stopping Power, Steady Aim FAMAS Silencer, Semtex, 1 Man Army, Stopping Power, Ninja UMP45 Silencer, Blast Shield, 1 Man Army, Cold Blooded, Ninja Those are the main classes, you can add one with an MG4 for shooting through walls, etc. The Killstreaks would be Harrier, Chopper Gunner, Nuke. Use Danger Close while launching the harrier and chopper gunner.
Army Man - magazine - was created in 1988.