In 1631 the Scottish brigades in the Swedish main (Crown) army marched to Leipzig, while other Scots and English units served with James 3rd Marquis Hamilton in an auxiliary British Army guarding the rear of the army. The famous Battle of Breitenfield (also known as the Battle of Leipzig) took place, near Leipzig, in September of that year. Tilly was defeated by Gustavus Adolphus and the Munros, who by their last charge contributed most to the victory of the Swedish Army. Sir James Ramsay was in command of the Scottish vanguard, and then it was on 7 September "after we had in the early morning, as the larke begunne to peep commended ourselbes and the event of the day to God," that the great battle commenced. Whilst the Imperial cavalry scattered the Saxons on the left wing, the Scottish stood firm, firing for the first time in platoons. Hepburn formed a square and, when the Austrians had approached near enough, caused his victorious pikemen to advance. In the meantime Lord Reay’s MacKay and Munro Highlanders were equally successful.