The British Army's infantry was nicknamed "redcoats" and sometimes "devils" by the colonists.
They had occupied Boston since 1768 and had been augmented by naval forces and marines to enforce what the colonists called The Intolerable Acts, which had been passed by the British Parliament to punish the Province of Massachusetts Bay for the Boston Tea Party and other acts of defiance.

General Thomas Gage was the military governor of Massachusetts and commander-in-chief of the roughly 3,000 British military forces garrisoned in Boston.
He had no control over Massachusetts outside of Boston, however, where implementation of the Acts had increased tensions between the Patriot Whig majority and the pro-British Tory minority.
 Gage's plan was to avoid conflict by removing military supplies from Whig militias using small, secret, and rapid strikes.
This struggle for supplies led to one British success and  several Patriot successes in a series of nearly bloodless conflicts known as the Powder Alarms.
Gage considered himself to be a friend of liberty and attempted to separate his duties as governor of the colony and as general of an occupying force.
Edmund Burke described Gage's conflicted relationship with Massachusetts by saying in Parliament, "An Englishman is the unfittest person on Earth to argue another Englishman into slavery."

The colonists had been forming militias since the very beginnings of Colonial settlement for the purpose of defense against Indian attacks.
 These forces also saw action in the French and Indian War between 1754 and 1763 when they fought alongside British regulars.
Under the laws of each New England colony, all towns were obligated to form militia companies composed of all males 16 years of age and older (there were exemptions for some categories), and to ensure that the members were properly armed.
The Massachusetts militias were formally under the jurisdiction of the provincial government, but militia companies throughout New England elected their own officers.
 Gage effectively dissolved the provincial government under the terms of the Massachusetts Government Act, and these existing connections were employed by the colonists under the Massachusetts Provincial Congress for the purpose of resistance to the military threat from Britain.
The British Army's infantry was nicknamed "redcoats" and sometimes "devils" by the colonists. They had occupied Boston since 1768 and had been augmented by naval forces and marines to enforce what the colonists called The Intolerable Acts, which had been passed by the British Parliament to punish the Province of Massachusetts Bay for the Boston Tea Party and other acts of defiance.
General Thomas Gage was the military governor of Massachusetts and commander-in-chief of the roughly 3,000 British military forces garrisoned in Boston. He had no control over Massachusetts outside of Boston, however, where implementation of the Acts had increased tensions between the Patriot Whig majority and the pro-British Tory minority.  Gage's plan was to avoid conflict by removing military supplies from Whig militias using small, secret, and rapid strikes. This struggle for supplies led to one British success and  several Patriot successes in a series of nearly bloodless conflicts known as the Powder Alarms. Gage considered himself to be a friend of liberty and attempted to separate his duties as governor of the colony and as general of an occupying force. Edmund Burke described Gage's conflicted relationship with Massachusetts by saying in Parliament, "An Englishman is the unfittest person on Earth to argue another Englishman into slavery."
The colonists had been forming militias since the very beginnings of Colonial settlement for the purpose of defense against Indian attacks.  These forces also saw action in the French and Indian War between 1754 and 1763 when they fought alongside British regulars. Under the laws of each New England colony, all towns were obligated to form militia companies composed of all males 16 years of age and older (there were exemptions for some categories), and to ensure that the members were properly armed. The Massachusetts militias were formally under the jurisdiction of the provincial government, but militia companies throughout New England elected their own officers.  Gage effectively dissolved the provincial government under the terms of the Massachusetts Government Act, and these existing connections were employed by the colonists under the Massachusetts Provincial Congress for the purpose of resistance to the military threat from Britain.
Battles of Lexington and Concord