Giant-Size Invaders #1

The first Invaders in Marvel's short-lived giant-size comics campaign.Giant-Size Invaders 1 recounts the origin of Captain America in a flashback scene as young scrawny Steve Rogers drinks Dr. Erskine’s Super Soldier Formula. Almost immediately after Rogers drinks the formula, Dr. Erskine is shot and killed by Nazi agent Kruger who had infiltrated the secret lab where the Super Soldier Formula had been developed.