The Maritime Reaction Squadron (MRS) is a specialised marine-like unit of the South African Navy that provides a combat ready amphibious, diving and small boat capability to the Navy.

[1] Formed as the Naval Rapid Deployment Force (NRDF) in 2005,[2] the MRS deploys infantry-trained South African Navy personnel in various peacekeeping roles within the African continent and to assist in boarding operations at sea, humanitarian operations and disaster relief.

[3] After the integration of the South African National Defence Force the Navy was increasingly called on to assist with peace keeping operations.

[2] An Operational Boat Squadron was formed in 2006[4] to ensure that South Africa could commit meaningfully to the peace keeping at the Great Lakes.

[3] The Rapid Deployment Force became the Maritime Reaction Squadron on 1 September 2006.