Desert Camouflage

Desert Camouflage is a pattern of camouflage used by the military for use in desert and urban desert environments. It appears in Call of Duty 4 and Modern Warfare 2.

Call of Duty 4: Modern Warfare
In Call of Duty 4: Modern Warfare, desert camouflage is available on any weapon as one of the default camouflages. It can only be used in online multiplayer. Desert camouflage can help blend in on maps like "Strike", "Bog", "Backlot", "Crash", "Crossfire", "Ambush" and "Showdown".

Call of Duty: Modern Warfare 2
The Desert camouflage in Call of Duty: Modern Warfare 2 is unlocked at default as well as the previous installment. This will be automatically unlocked along with the Arctic scheme for all primary weapons. This camo is superior on desert levels such as Afghan, Rust, Strike, and possibly Crash. However, gun camo usually has little help in disguising the weapon's user, as camo is usually a sign of rank. It is a very effective camouflage for almost all maps, aside from arctic maps, and darker colored maps, such as Estate, Wasteland, ect.

Call of Duty: Black Ops
Desert Camouflage is seen on one of the weapons featured in the multiplayer teaser trailer.

Trivia

 * On the Wii version, Modern Warfare: Reflex, it looks more like a monochrome beige than the proper camo.
 * When using Desert camo on the F2000, in a sunny map like Scrapyard, it looks gold instead of desert.