Roulement

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Roulement is a term used by the British Army to signify major combat units (usually battalion strength) that are deployed on short tours of duty, normally for 6-months duration.

The British Army has historically deployed infantry battalions for 6-month roulement tours of Northern Ireland. Royal Marine commando battalions serving as infantry in Northern Ireland are also roulement units.

The British Army currently deploys roulement units to Iraq as part of Operation Telic, and to Cyprus on Operation Tosca with the UN.