In the face of rising unrest in the colony, Dunmore sought to deprive Virginia's militia of military supplies. Dunmore gave the key to the Williamsburg magazine to Lieutenant Henry Colins, commander of HMS Magdalen, and ordered him to remove the powder, provoking what became known as the Gunpowder Incident. On the night of 20 April 1775, royal marines loaded fifteen half-barrels of powder into the governor's wagon, intent on transporting it down the Quarterpath Road to the James River and the British warship.