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Grey Scouts:
Grey's Scouts were a Rhodesian mounted infantry unit raised in July 1975 and named for George Grey, a prominent soldier in the Second Matabele War. Based in Salisbury (now Harare), they were known for their participation in the Rhodesian Bush War. The unit was disbanded in November 1980.

Use in the Rhodesian Bush War
The creation of the unit was probably inspired by the Dragoons of Angola, a Portuguese Army mounted unit, raised in 1966, during the Portuguese Colonial War, to combat the guerrillas in Eastern Angola. Like the Dragoons of Angola, Grey's Scouts were used for tracking, reconnaissance, pursuit, and, most prominently, patrol in the Rhodesian Bush War.[2] With measured variations in horse speed for training purposes, they would cover an area of over 65 km (40 miles) on the average day. Their routes often took them through active minefields, which they were to inspect.[3] In addition to this, the small stature and manoeuvrability of the crossbreeds they rode on was of repeated benefit to the Rhodesian forces in the construction of border defences; the Scouts could transport materials and supplies over terrains impassable to vehicles. The horses themselves were mostly given in charity by sympathisers of the Rhodesian effort from South Africa and elsewhere.


http://en.wikipedia.org/wiki/Grey%27s_Scouts
www.rhodesianforces.org/GreysScoutsRideAgain.htm
The Rhodesian Light Infantry Regimental
Assocation of Australasia