Most of the American Continental Line Regiments raised in 1775 were by the New Englanders. As there was no real standard for the entire Army, regiment sizes varied from state to state. Most states had regiments of about 600 men in 10 companies, except the Connecticut 1st to 6th Regiments which were to have 1000 men in 10 companies. Only briefly did these regiments stay at their full strength. Regiment sizes in July, 1775 were between 400 and 600 men, except for the Connecticut regiments which did have about 1000 men each. By December, 1775 the regiments averaged between 500 and 600 men. Almost everyone of these regiments' enlistments expired at the end of 1775 and they were disbanded and reformed into the Continental Regiments of 1776.
Massachusetts Authorized 27 Infantry regiments on 22 May 1775:
Commanded by Col. David Brewer, later by Col. Rufus Putnam; Authorized Apr 1775; Organized in spring 1775; Adopted June 1775 into the Continental Army (see also 1776)
Commanded by Col. John Greaton; Authorized Apr 1775; Organized in spring 1775; Adopted June 1775 into the Continental Army; Redesignated July 1775 as Greaton's Regiment (see also 1776)
Commanded by Col. Thomas; Authorized Apr 1775; Organized in spring 1775; Adopted June 1775 into the Continental Army; Redesignated July 1775 as Bailey's Regiment (see also 1776)
Commanded by Col. Richard Gridley; Authorized May 1775; Organized June 1775; Adopted June 1775 into Continental Army as the Continental Artillery Regiment; Reorganized late June 1775 (see also 1776)
Commanded by Col. Patrick Henry; Authorized Aug 1775 in the Virginia State Troops; Organized Oct 1775; Adopted Nov 1775 into Continental Army (see also 1776)
Commanded by Col. William Woodford; Authorized Aug 1775 in the Virginia State Troops; Organized Oct 1775; Adopted Nov 1775 into Continental Army (see also 1776)
Commanded by Col. Thompson; Authorized June 1775 in South Carolina State Troops as the South Carolina Regiment of Horse Rangers; Organized in summer 1775; Redesignated 12 November 1775; Adopted July 1776 into Continental Army