Who were the green mountain boys and what value did they bring to the war

The Green Mountain Boys were a militia organization first established in the late 1760s in the territory between the British provinces of New York and New Hampshire, known as the New Hampshire Grants (which later became the state of Vermont). Headed by Ethan Allen and members of his extended family, they were instrumental in resisting New York's attempts to control the territory, over which it had won de jure control in a territorial dispute with New Hampshire.