Direct proof of use
Official U.S. military sources document EC-130H Compass Call use in Operation Inherent Resolve during the 2014 War Against the Islamic State. A December 2016 Air Force article said the U.S. Air Force was employing the EC-130H Compass Call every day in the fight against ISIL, with 43rd Expeditionary Electronic Attack Squadron crews denying Islamic State command-and-control communications while supporting Iraqi allies.
CENTCOM imagery from January 18, 2017 identified an EC-130H Compass Call taking off from an undisclosed Southwest Asia airfield and stated that the aircraft was engaged in operations jamming Da'esh communications. DVIDS and AFCENT reporting later in 2017 identified the 43rd Expeditionary Electronic Combat Squadron as operating EC-130H Compass Call aircraft in the Operation Inherent Resolve battlespace.
Sources: Compass Call Targets ISIL, CENTCOM OIR Media Day Image, DVIDS Compass Call Reshapes OIR
Timeline
The public record places the 43rd EECS in the Operation Inherent Resolve mission from 2015 through its September 2019 inactivation. DVIDS' OIR media-day feature said the squadron was deployed to Southwest Asia, operated EC-130H Compass Call aircraft in support of Operation Inherent Resolve, and flew aircraft deployed from Davis-Monthan Air Force Base.
Specific public milestones include December 2016 Air Force coverage of EC-130H electronic attack against ISIL, January 2017 CENTCOM imagery of an OIR Compass Call sortie, August 2017 DVIDS reporting on EC-130H crews performing tactical command, control, and communications countermeasures, and October 2019 AFCENT reporting that the 43rd EECS had operated with the 386th Air Expeditionary Wing since 2015.
Sources: DVIDS OIR Media Day Feature, Compass Call Targets ISIL, CENTCOM OIR Media Day Image, DVIDS Compass Call Reshapes OIR, AFCENT 43rd EECS Inactivation
Narrative
The EC-130H's documented role in the anti-ISIS campaign was non-kinetic airborne electronic attack rather than strike or transport. Official accounts describe the aircraft as disrupting, denying, or degrading Islamic State command-and-control communications so that enemy fighters were harder to coordinate while friendly ground and coalition forces operated.
The documented operator was the U.S. Air Force, especially the 43rd EECS under the 386th Air Expeditionary Wing in Southwest Asia. The supported catalog side is anti-ISIS coalition and partner forces because the cited missions supported U.S. and coalition forces, Iraqi allies, and partner ground forces against Islamic State units in Iraq and Syria.
The sources support deployment, sortie activity, and communications-jamming use in the OIR battlespace. They do not provide a complete sortie log or identify every geographic target area; the public reporting names broad Southwest Asia basing and operational examples from the Mosul campaign to smaller single-event missions.
Sources: DVIDS Compass Call Reshapes OIR, Compass Call Targets ISIL, AFCENT 43rd EECS Inactivation