In Jamaica, in addition to its responsibility of defending against external aggression, the Jamaican Defense Force's (JDF) primary missions are border, cyber, internal, and maritime security; other missions include search and rescue, disaster response, humanitarian assistance, and peacekeeping; it has arrest authority and partners with the Jamaica Constabulary Force (JCF), particularly in support of combating crime and violence; 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 armed forces 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 (2025)