In Jamaica, in addition to its responsibility of defending against external aggression, the JDF's primary missions are border, internal, and maritime security, including support to police operations in combating crime and violence; other missions include search and rescue, disaster response, humanitarian assistance, and peacekeeping; it has arrest authority and partners with the Jamaica Constabulary Force (JCF); both the JDF and JCF are under the Ministry of National Security, which directs policy for the security forces; the JDF participates in bilateral and multinational training exercises, including with the militaries of Canada, the UK, the US, and other Caribbean nations 

while Jamaica had a militia force as early as the 1660s, the JDF was constituted in 1962 from the West India Regiment (WIR), a British colonial regiment which dates back to 1795; troops for the WIR were recruited from freed slaves from North America, slaves purchased in the West Indies, and slaves from Africa bought off slave ships (2023)