The Battle of Palm Sunday also known as the Massacre of Palm Sunday was a Scottish clan battle that took place in 1429 in the Scottish Highlands. According to the Clan Cameron account, the Clan Mackintosh who were leaders of the Chattan Confederation attacked the Camerons when they were worshiping in a church and that during the engagement most of the Mackintoshes and almost the whole tribe of Camerons were cut to pieces.