Although the raiders were initially successful in cutting the telegraph line and capturing the Armory, they allowed a passing train to continue, and at the next station with a working telegraph the conductor alerted authorities to the attack. The raiders were forced by the militia and other locals to barricade themselves in the Armory, in a sturdy building later known as John Brown's Fort. Robert E. Lee (then a colonel in the U.S. Army) led a company of U.S. Marines in storming the armory on October 18. Ten of the raiders were killed, including two of Brown's sons; Brown himself along with a half dozen of his followers were captured; five of the raiders escaped immediate capture. Six locals were killed and nine injured; the Marines suffered one dead and one injured.