The regiment served at the battles of Steenkirk, in August 1692, and Landen, in July 1693. The regiment remained in the Low Countries for some time, before moving to Perth; in 1702, following the outbreak of the War of the Spanish Succession, they returned to Europe as part of an army under Marlborough. With his regiment, Blackadder fought at Schellenberg and Blenheim in 1704; at Blenheim, he was wounded, but recovered and was promoted to Major in October 1705. He then served at Ramillies in 1706, and Oudenarde and Wynendaele in 1708; the same year, the regiment besieged Lille, where Blackadder was again wounded twice.