Hearing no immediate reply from Washington, on the evening of April 19 Governor Hicks and Mayor Brown ordered the destruction of railroad bridges leading into the city from the North, preventing further incursions by Union soldiers. The destruction was accomplished the next day. One of the men involved in this destruction would be arrested for it in May without recourse to habeas corpus, leading to the ex parte Merryman ruling. For a time it looked as if Maryland was one provocation away from joining the rebels, but Lincoln moved swiftly to defuse the situation, promising that the troops were needed purely to defend Washington, not to attack the South. President Lincoln also complied with the request to reroute troops to Annapolis, as the political situation in Baltimore remained highly volatile. Meanwhile, General Winfield Scott, who was in charge of military operations in Maryland indicated in correspondence with the head of Pennsylvania troops that the route through Baltimore would resume once sufficient troops were available to secure Baltimore.