TC 2-91.4 provides intelligence professionals a basic framework within which to focus on providing commanders with effective intelligence support for operations in the urban environment. This manual incorporates intelligence and operational doctrine and terminology from FM 3-06 and ATTP 3-06.11. The principal audience for TC 2-91.4 is intelligence staffs and Soldiers of units conducting intelligence support to operations in the urban environment. It can also be used by commanders, staffs, and intelligence personnel at all echelons. TC 2-91.4 focuses on techniques used during offensive, defensive, and stability operations. See ATP 2-91.7 for doctrine for defense support to civil authorities operations. Commanders, staffs, and subordinates ensure their decisions and actions comply with applicable U.S., international, and, in some cases, host-nation laws and regulations. Commanders at all levels ensure their Soldiers operate in accordance with the law of war and the rules of engagement. (See FM 27-10.)