Hugh Mackay (c. 1640 – 24 July 1692) was a professional army officer from Sutherlandshire, in Scotland. He spent most of his career in the service of William of Orange, settled in the Dutch Republic, and was killed at the Battle of Steenkerque. In 1660, Mackay was commissioned into Dumbarton's Regiment, spending the next few years in England and France, then volunteered to serve in the Venetian army during the Cretan War. In 1673, he joined the Scots Brigade, a long established mercenary unit of the Dutch States Army. He served with the brigade for the rest of his career. Mackay led the brigade during the Glorious Revolution and was military commander in Scotland during the Jacobite rising of 1689. Despite...