Rebirth to a Military Marriage: Good Morning Chief - Chapter 13: ‘Studious’

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

“Since I was born, I’ve had the same dream every day, where the same day repeats over and over.”“What do you do in the dream?”“Rob banks, blow up buildings, flirt with girls, play Grand Theft Auto… since it’s a dream, I naturally do a lot of lawless things.”“Tell me what you did last night.”“Last night was more interesting. I’ve been dreaming for so long, but it’s the first time I’ve dreamt of someone I know in real life. She was a very beautiful girl…”“Mhm.” The police officer nodded while taking notes. “Go on, I’m listening.”

Power? Wealth? Glory? Who freaking cares!

Jack just wants to live in peace, but he’s the greatest trouble magnet EVER!

[Ding! Congratulations! You've Awakened!]

[Unlocked SSS+ Curse of Obliteration!]

[Good Luck Surviving!]

Just as all hope seems lost, he gets reincarnated in the Game-like Magical world of Eternia! Is this finally a chance at an uneventful life?

Jack will do whatever it takes to accomplish his goal, including World Domination. Can’t have anyone disturbing you if they’re all under your rule!

But this might prove troublesome… For instance, how are there so many Demonic Gods trying to make him their Slave?! Can’t they just leave him alone?!

Every Goddamn Day….

[Class Unlocked: Ruin Knight!]

[Class Unlocked: Blood Mage!]

[Class Unlocked: Grim Reaper!]

[Class Unlocked: Vampire Progenitor!]

[Class Unlocked: Apocalypse Overlord!]

[Class Unlocked: Ethereal Incubus Prince!]

“Sigh…..”

They say the greatest blessing is marrying the idol you always dreamed of.