To get the cannabis leaf emblem you have to complete the denial challenge, which is killing someone who is 1 kill away from a 10 kill streak. This means you have to kill an enemy who is on a 9 killstreak, no more, no less. If you do this, you will get the emblem, I promise. You also have to be above level 60 on 1st prestige. (That's to get the High Command title not the emblem.)
Go to www.callofduty.wikia.com
Stop someone when he/she is on a 10+ killstreak. You must be a high enough level to unlock this challenge.
you need to complete the "denier" challenge
Kill someone on a 10+ killstreak. You must be high-ranked enough to have already unlocked this challenge.
it was a joke
to get the harrier moving emblem you have to call in 50 harrier strikes.
Be 10th prestige
25
Kill Soap
2nd prestige
It is impossible to get the 10th Prestige moving emblem on Call of Duty: Modern Warfare 2. Infinity Ward made this to catch hackers red handed. That's why you must hack to the get the emblem.
Call in a Nuke to win the game, when your team is losing fking fat chance though lolz
Get a "Payback" by sticking a Semtex on an enemy
Get a "Payback" by sticking a Semtex on an enemy
Call in 50 Pave Lows.
get 50 pred misilles
You unlock it by getting to 10th Prestige.