This operation name is from the game Metal Gear (メタルギア Metaru Gia) also by Kojima in 1987.

In addition, the cutscene shows yourself taking the cassette tape (Side A is music 'From the Man Who Sold the World') and flipping it over to reveal Side B ('OPERATION INTRUDE N313'). Venom Snake turns into Naked Snake in the mirror as the game reveals you were the Medic who was implanted with the memory of Big Boss. See secret ending in Metal Gear Solid V: The Phantom Pain. It contained Mission 51, which was an unfinished mission described in a video commentary included in the collector's edition of Metal Gear Solid V: The Phantom Pain. Note that Chapter 3 was not completed in time, and was cut from the game. The game is broken up into a prologue and 3 chapters: Your name is designated as Ahab by the doctor, while Ismael is the nickname of the real Big Boss. (Reconstructive Surgery with an ID card 14-2355-2439 Issued on March 12, 1979). The doctor who takes care of you is named Evangelos Constantinou M.D. The first person you see is brunette nurse Aglaia Xenakis, RN (ID 19-4265-7002), while your direct nurse is named Alexandra Pikrammenos, RN.

This military hospital (long name: Dhekelia SBA Memorial Hospital), is located in Cyprus. Prologue: Awakening is the very beginning of the game where you wake up in the DSBA Hospital.

Metal Gear Solid V: the Phantom Pain is broken up into a Prologue and 3 Chapters. Metal Gear Solid V: The Phantom Pain - Secrets and Easter Eggs Metal Gear Solid V: The Phantom Pain - Secrets and Easter Eggs

Mgsv tpp chapter 3