More than 200 regiments of military volunteers were raised in Pennsylvania to serve in the United States Volunteers at various times, beginning during the War of 1812 and continuing until the passage of the Militia Act of 1903.
[1] Among the units raised for the War of 1812 were: Philadelphia continued to raise volunteer units throughout the war: "During the autumn of 1814, a large number of Volunteer Companies were organized in the City and County but did not take the field".
[3] More than 200 volunteer regiments were raised in Pennsylvania for the Civil War.