Like The Life Guards, the Blues saw action in the majority of major actions in Flanders, also suffering heavy losses at Zandvoorde, and in the 3rd Guards Machine Gun Battalion (Blues) in 1918. Likewise the Second World War saw the Regiment divided between 1st and 2nd Household Cavalry Regiment in Palestine, Syria and Normandy before entering the German naval base of Cuxhaven in 1945.

The years afterwards were spent in Germany, Cyprus and Windsor before the regiment amalgamated with The Royal Dragoons in March 1969.
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