Via the USA and USMC Counterinsurgency Center Blog - The US Army's comprehensive approach to COIN for brigades, battalions, and companies is now available as an Approved Final Draft - FMI 3-24.2, Tactics in COIN.
FMI 3-24.2 is designed to be a user-manual for tactical level units and establishes doctrine for tactical counterinsurgency operations by combining the historic approaches to COIN, lessons learned from current operations, and the realities of today's operational environment.