Direct proof of use
The U.S. Army directly ties the Modernized Target Acquisition Designation Sight/Pilot Night Vision Sensor, or M-TADS/PNVS, to Iraq combat use. In its 2013 account of the system reaching one million flight hours, the Army said M-TADS/PNVS was first fielded in 2005 and first saw combat when deployed to Iraq in 2006 with the 1-82nd Attack Reconnaissance Battalion.
The same Army account described M-TADS/PNVS as the Apache's targeting and pilotage system and quoted Apache program leadership and an Apache pilot on its use during Iraq and Afghanistan engagements. Lockheed Martin's 2010 fielding release separately said every Apache battalion then deployed for current operations in Iraq and Afghanistan was equipped with M-TADS/PNVS.
Sources: Apache MTADS Combat History, Lockheed M-TADS Iraq Fielding
Timeline
The modernized sight entered U.S. Army fielding in 2005 and reached combat service in Iraq the following year. The identified first combat unit was 1-82nd Attack Reconnaissance Battalion, the first unit equipped with the modernized sight.
By March 2010, Lockheed Martin quoted the Apache program manager saying every Apache battalion deployed for current operations in Iraq and Afghanistan had M-TADS/PNVS. In August 2013, the Army marked one million M-TADS/PNVS flight hours and said most of the hours had been accumulated in combat.
Sources: Apache MTADS Combat History, Lockheed M-TADS Iraq Fielding
Narrative
In the 2003 Iraq War, Apache Fire Control is documented as an installed sensor and fire-control suite on U.S. Army AH-64 Apache helicopters, not as an independently employed weapon. The supported conflict-use claim is that U.S. Army Apache units fielded M-TADS/PNVS in Iraq for target acquisition, pilotage, and engagement support.
The sources distinguish the system from the helicopter's missiles, rockets, and gun. The Army account frames M-TADS/PNVS as the sensor suite that allowed Apache crews to find the enemy first, while Lockheed Martin describes Gen 3 TADS/PNVS as an AH-64D/E electro-optical fire-control system for targeting and pilotage.
Sources: Apache MTADS Combat History, Lockheed M-TADS Iraq Fielding, Gen 3 TADS PNVS