Captain America #12 (Marvel, 2005)

Captain America's legacy is war, spilling blood in service of his country to undermine the forces of tyranny -- but since returning to life he learned that war has since given way to new evils: subterfuge and espionage. The partner Cap once treasured has become a clandestine assassin, turned into an operative of the new world order and dubbed the Winter Soldier, and in one of the most popular Captain America arcs to date we root for Steve Rogers all over again as he goes to any length to save his best friend.