The song by Glass Tiger "Thin Red Line" is about the Battle of Balaclava in the Crimean War in 1854. Kedikoi is also spelt Kadikoi and is a small village. Drawn up in front of it were the Highlanders (Rory's is a common referrence to the Scottish). Claidemaugh is a dubious spelling of claymore, an English word which is a basket hilted sword and a metaphor for martial valour. The "Thin Red Line" of only several hundred Highlandes and allies saw off approximately 2,500 Russian cavalry.
Go here for full battle details:
HTTP//WWW.BRITISHBATTLES.COM/CRIMEAN-WAR/BALACLAVA.HTM