Peggy was last seen in Captain America: The Winter Soldier, though she's mentioned in Captain America: Civil War when Steve learns that she's passed away. Steve finds Peggy's office when he and Tony travel back to her army base in 1970 to steal the Tesseract and more of Hank Pym's particles. Though they never speak, the run-in drives Steve to travel back in time and stay with Peggy at the end of the film.