His actions included the Capture of Fort Ticonderoga in 1775, defensive and delaying tactics despite losing the Battle of Valcour Island on Lake Champlain in 1776, the Battle of Ridgefield , Connecticut (after which he was promoted to major general), operations in relief of the Siege of Fort Stanwix , and key actions during the pivotal Battles of Saratoga in 1777, in which he suffered leg injuries that ended his combat career for several years.