Scottish Claymore,
Early sixteenth century, 
National Museum of Scottland.

The Claymore, or "claidheamh mor" in Scottish Gaelic, was used by the Scottish Highlanders during the incessant clan rivalries and and wars fought against the English armies between the 16th and 18th centuries. The two handed claymore was a transitional battle ready sword, originating from the Early Scottish medieval swords which developed a distinctive cross-guard. The Two handed Claymore was widely used by the Scottish Highlanders until the Battle of Killiecrankie in 1689.