The Battle of Loudoun Hill was fought in May 1307 between a Scots force led by Robert Bruce and the English commanded by Aymer de Valence. It took place beneath Loudoun Hill, in Ayrshire, and ended in a victory for Bruce. It was Bruce's first major military victory. The battlefield is currently under research to be included in the Inventory of Historic Battlefields in Scotland and protected by Historic Scotland under the Scottish Historical Environment Policy of 2009.