The 4th Combat Training Squadron provides accredited Joint Terminal Attack Controller (JTAC) Instructor and JTAC Evaluator courses for US, Joint, NATO, Partners for Peace and various African partner nations.   Additionally, 4 CTS leads EUCOM and AFRICOM in Building Partner Capacity (BPC) efforts towards Air to Ground Integration capabilities through its extensive involvement in select multinational exercises.

Detachment 1, 4 CTS, located at the Joint Multinational Readiness Center (JMRC) in US Army Garrison Bavaria-Hohenfels, Germany, performs the Observe, Coach and Train (OC/T) mission for TACPs aligned with US Army Brigades for multi-national exercises.  Det 1 aligns EUCOM air to ground operations and doctrine under a consolidated command and control network to ready the joint and combined force for major combat operations against a peer threat.