"In heroes we trust."
Captain America: The Winter Soldier - Easter Eggs & Hidden Details
Easter Eggs
Stephen Strange name-drop
During his interrogation, Jasper Sitwell lists potential threats to Hydra targeted by Zola's algorithm, including 'Stephen Strange', teasing Doctor Strange's arrival in the MCU years before his solo film.
Crossbones' origins
S.H.I.E.L.D. operative Brock Rumlow is shown being pulled from the Triskelion rubble with severe burns and crossed straps across his chest, foreshadowing his transformation into the villain Crossbones.
Zola's robotic screen face
When Arnim Zola's consciousness is revealed to be preserved inside a massive 1970s supercomputer, his face appears on a central monitor. This is a clever, grounded adaptation of his comic book counterpart, who is a robot with a screen on its chest.
WarGames reference
When Black Widow boots up the secret underground computer, she says, 'Shall we play a game?' and Cap replies, 'Love to. How about Global Thermonuclear War?'—a direct reference to the 1983 sci-fi thriller WarGames.