 The PRR also formally leased the HPMt.J&L RR in 1861, giving it complete control over its line from Philadelphia to Pittsburgh.This line would provide valuable service during the Civil War, particularly when the Philadelphia, Wilmington and Baltimore Railroad came under attack from Confederates and saboteurs or was simply jammed with traffic.Troops could be sent via the PRR to Columbia, cross the Columbia-Wrightsville Bridge, and ride down the Northern Central to Baltimore.