Former Regime Elements
Foreign Fighters & Terrorist Cells: Al Qaeda, Ansar Al Islam, et al
Insurgents: Armed tribal factions / criminals / smugglers / Islamic extremists
Tribal Militias

TTPs

Cell structure with mobile, dispersed C2: Every soldier must understand Regional Leader's intent, PIR, and HPTs.

Civilian clothes, weapons cached; blend with local populace and Civilians on the Battlefield

Communicate by cell phone, messenger, and walk about radio

IEDs, VBIEDs, Mortar/Rocket Attacks, RPG/Small Arms Attacks, Suicide Attacks

Aggressive Information Warfare Campaign