On 6 July 1776, the Maryland Battalion was assigned to the main Continental Army. On 12 August 1776, it was assigned to Stirling's Brigade and five days later (17 August 1776) adopted into the main Continental Army. On 31 August, the Maryland Battalion was reassigned from Stirling's Brigade to McDougall's Brigade. On 19 September 1776 the Maryland Independent Companies were assigned to the Maryland Battalion. This element was relieved from McDougall's Brigade on 10 November 1776. From 10 December 1776 to January 1777, the element was assigned to Mercer's Brigade. In January 1777 this element was re-organized to eight companies and was re-designated as the 1st Maryland Regiment and assigned to the 1st Maryland Brigade on 22 May 1777 of the main continental Army. On 12 May 1779, the regiment was re-organized to nine companies. On 5 April 1780, the 1st Maryland Brigade was reassigned to the Southern Department. On 1 January 1781, it was reassigned to the Maryland Brigade of the Southern Department. The regiment would see action during the New York Campaign, Battle of Trenton, Battle of Princeton, Battle of Brandywine, Battle of Germantown, Battle of Monmouth, Battle of Camden and the Battle of Guilford Court House. The regiment was furloughed 27 July 1783 at Baltimore and disbanded on 15 November 1783.