Security footage from Howard Stark ’s decease inCaptain America : Civil Warshowed he knew Bucky Barnes was the Winter Soldier , but how did he live this arcanum ? From the very beginning of the Marvel Cinematic Universe , it has been get it on that Tony Stark ’s parentsdied on December 16 , 1991 . It was after bring out inCaptain America : The Winter Soldierthat Hydra ’s super - assassin was the one responsible , with Marvel ultimately confirm that Bucky Barnes was transform into the Winter Soldier following his presumed death in 1945 .

After dance around Howard and Maria Stark ’s death , Captain America : Civil Warexplicitly showed the character assassination . Part of Baron Zemo ’s plan to split the Avengers apart include showing the footage to Tony . The security camera caught the automobile crash andWinter Soldier shooting Howard , but also an intriguing audio detail .   Winter Soldier is unmasked during the mission and Howard recognize Bucky , bid him Sergeant Barnes . At that point , Winter Soldier ’s identity was not wide known , so how did Howard have it away it was Bucky ?

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Both of them have roles inCaptain America : The First Avenger , but Howard and Bucky never shared the screen . gratefully , there are several easy account for how Howard would recognize Sergeant Barnes . Stark worked at the SSR base during World War II and operated tight with Captain America . It would stand to cause that Howard and Bucky would ’ve crossed course at some point . Howard even remarks inThe First Avengerthat one of his jobs was equip Captain America and his men , which unavoidably would lead to him meet Bucky .

Although Howard might have recognized Bucky as the man behind the Winter Soldier identity , the ease of the man did n’t calculate out who he was until much afterward . Steve only learned of Bucky ’s true fortune andwhat he did to Tony ’s parentsinCaptain America : The Winter Soldierwhen Hydra sent the Winter Soldier to obliterate Nick Fury and help them topple SHIELD . Now , Bucky ’s past is well - be intimate thanks toCaptain America : Civil Warand he ’s attempting to move past what he ’s done before and be   a sound man . Fans will be able to see how that goes inThe Falcon and The Winter Soldier , and hopefully it countersink up a promising MCU future for Bucky .

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