 The song's tune is noted for being played by Ulster loyalist marching bands.Unionists point to the Battle of the Boyne as decisive in achieving a constitutional monarchy in the United Kingdom.Modern historians also agree that this conflict, otherwise known as the Glorious Revolution and played out in Scotland as well, was the conclusion of the English Civil War of 1642-1651/ Indeed, King James II as a very young Duke of York was present with his father Charles at the Battle of Edge Hill in 1642.