In 1938 in India it exchanged its horses for armoured vehicles
and became part of the newly formed Royal Armoured Corps (RAC).
During the Second World War the 3rd Carabiniers served solely in
Asia after Japan's entry into the war in December 1941. In 1943
following garrison duty in southern India, equipped with M3
Lee medium tanks they joined the 254th Indian Tank Brigade
taking part in the Battle of Imphal in March 1944 and later
retook the Nunshigum Ridge on April 13th following fierce fighting
to dislodge the Japanese defenders. In 1945 the regiment advanced
deep into occupied Burma engaging in fighting at Shwebo and Sagang
and also took part in the capture of Ava and Mandalay. After the
war's official end the regiment remained part of the Garrison in
India until Independence and were the last cavalry regiment to
leave India.
The 3rd Carabiniers were posted to the British Army of the Rhine
in West Germany between 1952 and 1959. Following a short
spell in Tidworth they returned to Germany in 1961. In 1967
the Regiment re-roled as a reconnaissance unit, stationed in The
Dale Camp Chester, operating the Ferret scout car.
On 2nd July 1971, the Regiment amalgamated with the Royal Scots
Greys (2nd Dragoons), forming the Royal Scots Dragoon Guards
(Carabiniers and Greys).