The Thin Red Line was a famous military action by the British Army's red-coated 93rd (Highland) Regiment at the Battle of Balaclava on October 25, 1854, during the Crimean War. In this incident the 93rd aided by a small force of Royal Marines and some Turkish infantrymen, led by Sir Colin Campbell, routed a Russian cavalry charge. Previously Campbell’s Highland Brigade had taken part in actions at Alma and Sevastopol.