Smoke

Damage: 0 / 15 Direct Impact
Range: 200-800
Fuse/Detonator: Only detonates after touching ground

The smoke grenades in CoD4 are very effective when compared to other fps games. After tossing one, you will notice the area really becomes impossible to see, and therefore proving great cover for getting across an area with snipers, or campers. It is also great for taking over an objective. Toss one down and move around a bit in the smoke, the enemy won't be able to spot you.