The Reality of asymmetrical warfare in Iraq.

Asymmetric warfare originally referred to war between two or more actors or groups whose relative military power differs significantly. Contemporary military thinkers tend to broaden this to include asymmetry of strategy or tactics; today "asymmetric warfare" can describe a conflict in which the resources of two belligerents differ in essence and in the struggle, interact and attempt to exploit each other's characteristic weaknesses. Such struggles often involve strategies and tactics of unconventional warfare, the "weaker" combatants attempting to use strategy to offset deficiencies in quantity or quality.

The victory by the U.S. led coalition forces in the 1991 Gulf War and the 2003 invasion of Iraq, demonstrated that training, tactics and technology can provide overwhelming victories in the field of battle during modern conventional warfare. After Saddam Hussein's regime was removed from power and the 2003 Occupation of Iraq began, the Iraq campaign moved into a different type of asymmetric warfare where the coalition's use of superior conventional warfare training, tactics and technology were of much less use against continued opposition from the various insurgent groups operating inside Iraq.

http://en.wikipedia.org/wiki/Asymmetric_warfare