The militia tradition continued with the first permanent English settlements in the New World. Jamestown Colony (established in 1607) and Plymouth Colony (established in 1620) both had militia forces, which initially consisted of every able bodied adult male. By the mid-1600s every town had at least one militia company (usually commanded by an officer with the rank of captain) and the militia companies of a county formed a regiment (usually commanded by an officer with the rank of major in the 1600s or a colonel in the 1700s).