In April, following the British evacuation of Boston, five regiments (the 6th, 14th, 16th, 18th, and 27th) were ordered to remain in Massachusetts, four of them occupying Boston. Three of these regiments (the 14th, 16th, and 27th) joined the Main Army in July. The 6th and 18th regiments joined the Northern Army in August, and never rejoined the Main Army.
Later in April, after the British left Boston, five battalions (the 6th, 14th, 16th, 18th, and 27th) were assigned to remain in Massachusetts, with four of them taking up positions in Boston. Three of these units (the 14th, 16th, and 27th) merged with the Main Army in July. The 6th and 18th battalions joined the Northern Army in August, but never returned to the Main Army.