The Jamaica Defence Force is comprised of a Regular Force and a Reserve Force.

The Regular Force has seven major units, which constitute the Force's combat arms. They are:

THE FIRST BATTALION, THE JAMAICA REGIMENT (1JR)
THE SECOND BATTALION, THE JAMAICA REGIMENT (2JR)
SUPPORT AND SERVICES BATTALION (SSB)
THE JDF AIR WING (JDF AW)
THE JDF COAST GUARD (JDF CG)
1 ENGINEER REGIMENT, JDF (1ER)
COMBAT SUPPORT BATTALION (CSB)
There is also a Reserve Force comprised of The Third Battalion, the Jamaica Regiment (3JR) (NR), as well as reserve elements of the JDF Air Wing and the JDF Coast Guard.