As an expert in comic book lore and superhero narratives, I can provide an answer to your question regarding the death of Captain America. In the Marvel Comics universe, Captain America has died or been presumed dead on a few occasions, but one of the most notable instances is from the 2007 storyline "Captain America: The Death of the Red Skull."

In this storyline, it is revealed that the Red Skull, a long-time enemy of Captain America, has orchestrated a plan that results in the apparent death of Steve Rogers, the original Captain America. The Red Skull's plan involves using a Cosmic Cube, an object of immense power that can alter reality, to switch bodies with Steve Rogers. After the switch, the Red Skull, in Steve's body, ages rapidly and dies, leading many to believe that Captain America is dead.

However, it is important to note that Steve Rogers was not truly dead but trapped in the body of the Red Skull. He eventually returned to his own body and continued his superhero duties.

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In the aftermath of Civil War, Captain America is taken into S.H.I.E.L.D. custody where he is assassinated per the order of the Red Skull. Crossbones snipes at him while Sharon Carter (Agent 13; Cap's girlfriend), who has been brainwashed by Doctor Faustus, posing as a S.H.I.E.L.D.read more >>