What does demilitarise mean?
Demilitarise means to strip an area, territory, or institution of its military forces, weapons, fortifications, or broader military character. The verb is most often used in international politics and diplomacy, particularly in reference to treaties that require conflicting parties to remove troops and armaments from contested regions — hence the familiar term 'demilitarised zone', a band of land where military activity is forbidden by agreement. Beyond geography, the word can describe reducing the military's role in civilian life, such as efforts to demilitarise a police force or a government. It carries a formal register and is closely tied to ideas of peace, de-escalation, and arms control. The spelling with an '-ise' ending is standard in British English, while American English favours 'demilitarize'. Its antonym, militarise, describes the opposite process of arming or fortifying. Because so many of the world's tensest borders have been managed through demilitarisation agreements, the word remains central to the vocabulary of conflict resolution and international law.
verbTo remove military forces, weapons, or fortifications from an area, or to reduce the armed character of something such as a zone, state, or institution.
- To remove military forces or installations from a region or territory.
- To eliminate the military character, influence, or control of an institution, government, or society.
"The treaty called for both nations to demilitarise the border region within a year."
"Under the peace accord, both sides agreed to demilitarise the disputed island."
"Reformers pushed to demilitarise the police force by transferring surplus equipment back to the army."
The Korean DMZ — created by demilitarising a strip of land in 1953 — has become one of the world's most unexpected wildlife sanctuaries, precisely because no humans are allowed in.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of demilitarise
Demilitarise combines the prefix 'de-' (indicating removal or reversal) with 'militarise', which derives from the Latin 'militaris' meaning 'of soldiers or war', itself rooted in 'miles' (soldier). English adopted 'militarise' in the nineteenth century amid growing discussion of national armed power, and the negative form followed as diplomatic language demanded a term for reversing militarisation. It shares this Latin root with words such as 'militia', 'military', 'militant', and, more distantly via the god Mars, 'martial'.
Related word forms
How demilitarise is actually used
This is chiefly the British spelling; American English prefers 'demilitarize'. The word is formal and appears most often in diplomatic, legal, and news contexts, especially regarding treaties and conflict zones.
Easily confused with demilitarise
Demobilise means to disband troops and release them from service, while demilitarise means to strip military presence or character from a place or entity.