The Connecticut Military Department is a state agency of the government of Connecticut. Its primary components are the Connecticut Army National Guard, the Connecticut Air National Guard, and four companies of the state militia. The Military Department of the State of Connecticut traces its origins to May 11, 1637, when the "General Courts" established a military arm of the provincial government. In 1939, the State's Military Department was established to consolidate the offices of Adjutant General, Quartermaster General, Armory Board, and Armory Board Inspector.

The Connecticut Air National Guard (CT ANG) is the aerial militia of the State of Connecticut, United States of America. It is, along with the Connecticut Army National Guard, an element of the Connecticut National Guard.