The U.S. Marshals during War War I:
      Registration and Arrest of Enemy Aliens

Alien enemy registration.

Deputy Backus escorting Werner Van Horne, who blew up the International Bridge at Vancebore, Maine.

The International Bridge at Vancebore, Maine, later blown up Van Horne.

Marshal James M. Power (Eastern District of New York) with deputies escorting Paul Henrig (center), convicted saboteur.

Two deputies escorting Ernst Kunwald, a prisoner of war.