. L-R:
Judah P. Benjamin,
Stephen Mallory,
Christopher Memminger,
Alexander Stephens,
LeRoy Pope Walker,
Jefferson Davis, John H. Reagan and
Robert Toombs. Despite the hostilities, the
United States Post Office Department continued operations in the Confederacy until June 1, 1861, when the Confederate service took over its functions. Reagan sent an agent to
Washington, D.C., with letters asking the heads of the United States Post Office Department's various bureaus to work for him. Nearly all did so and brought copies of their records, contracts, account books, etc. "Reagan in effect had stolen the U.S. Post Office," historian William C. Davis later wrote. Reagan cut expenses by eliminating costly and little-used routes and forcing railroads that carried the mail to reduce their rates. Despite the problems the war caused, his department managed to turn a profit, "the only post office department in American history to pay its own way," wrote William C. Davis. Reagan was the only member of the cabinet to oppose
Robert E. Lee's offensive into
Pennsylvania in June–July 1863. He instead supported a proposal to detach the
First Corps of the
Army of Northern Virginia to reinforce
Joseph E. Johnston in Mississippi, to break the
Siege of Vicksburg. Historian
Shelby Foote noted that, as the only Cabinet member from west of the Mississippi, Reagan was acutely aware of the critical consequences of Vicksburg's capture and control of the river by U.S. forces. When Davis abandoned
Richmond, Virginia on April 2, 1865, shortly before the entry of
Army of the Potomac under
George G. Meade, Reagan accompanied the president on his flight to the Carolinas. On April 27, Davis made him Secretary of the Treasury after
George A. Trenholm's resignation. Reagan served in that capacity until he, Davis, and
Texas governor Francis R. Lubbock were captured near
Irwinville, Georgia, on May 10. Reagan was imprisoned with Confederate vice president
Alexander Stephens at
Fort Warren in
Boston, Massachusetts. He was held in solitary confinement for twenty-two weeks. On August 11, he wrote an
open letter to his fellow Texans urging cooperation with the United States, renunciation of the secession convention, the abolition of slavery, and letting formerly enslaved people vote. He warned that the U.S. government would be forced to impose military rule to enforce these measures if Texans did not voluntarily adopt them. Abolition was underway, and Reagan knew there was support for granting the vote to
freedmen. Texans denounced him. After being released from prison later that year, he returned to his home in
Palestine, Texas in December. ==Return to public life==