K-1 Air Base (Kaywan)

K-1 Air Base, also designated Kaywan, is located in the Kirkuk Governorate of Iraq. Prior to 2003, the facility served as a primary air base for the Iraqi Air Force. The installation is named after the pumping station for the Kirkuk-Haifa oil pipeline, which was commissioned in 1934. Coalition forces captured the base in 2003 during Operation Iraqi Freedom. Following the invasion, the United States Army utilized the site as a Contingency Operating Location, and it functioned as the headquarters for the 12th Division of the Iraqi Army.

The United States Army transferred control of the base to Iraqi Security Forces in July 2011. During the 2014 Northern Iraq offensive, the 12th Division vacated the base. After a brief occupation by Islamic State forces, the Kurdish Peshmerga secured the installation. Between 2014 and 2017, the base hosted military personnel from the international coalition, including units from the United States, Italy, France, and Norway. Iraqi special forces retook the base on October 16, 2017, during the Battle of Kirkuk. The United States Army departed the installation on March 29, 2020.

The Iraqi armed forces currently operate the base. Infrastructure includes training centers used for the instruction of Iraqi Security Forces, including infantry and route clearance units. During coalition operations, the facility served as a site for advising and training Kurdish Peshmerga forces.