Civil War: Captain America by Ed Brubaker, Mike Perkins, Lee Weeks
Captain America has fallen into a clash with his government and his friends, and the people close to him are paying the price. The life of Cap's girlfriend, Agent 13, is torn apart as her superiors use her divided loyalties against her. Elsewhere, a new villain emerges; the Red Skull begins to make himself known; and the Winter Soldier again comes face-to-face with Cap. But which side will he choose? Plus: James Buchanan Barnes, Captain America's one-time partner Bucky, faces his first Christmas of the 21st century - and the truth of the terrible things he was forced to do as the Winter Soldier. And with Cap caught in a conflict he can neither take a side of - or understand - what moves can he make to try to redeem himself?!
Collecting Captain America #22-24 and the Winter Soldier: Winter Kills one-shot.