Mixed Armoured Cars Troop*
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Typically, when both light scout cars and a heavy armoured car were in use the troops would operate in a High/Low mix with the heavy cars providing overwatch fire support for the scout cars which led the recce. 
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A typical road patrol would be : Ferret, Saladin, Ferret, Saladin moving in mutual bounding overwatch pairs, often called a "snake patrol" from the way these pairs bunched then expanded as they recced along the road. NB - the lead Ferret would only ever move forwards under the overwatch of the lead Saladin's gun, preferably under both Saladin's overwatch.
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Any cross attached assault and/or ATGM section would follow at the "tail" of the snake and be called forwards as thier particular expertise was required. (See the "Wheel Patrol Group" formation).
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