As a source of manpower, leadership, and vital supplies, Carlisle and its vicinity played a significant role in the Revolutionary War effort. Nevertheless, and notwithstanding the fact that much of its present population has roots reaching well into the era of America's struggle for independence, the eastern region of Cumberland County has not until recently had its own chapter of the Sons of the American Revolution. Instead, interested and eligible residents affiliated with groups centered on Harrisburg, York, Gettysburg or Shippensburg.