Because I've Been Reincarnated as the Piggy Duke, This Time I Will Say I Like You - Chapter 118: The Beginning of a Battle to Death

In the end, war couldn’t be extinguished. But, there was a transformation. Even in the heart of a worthless accomplice in murder who was indifferently continuing his task, there was a transformation. The massive weapon “Object”.

This was a weapon that changed the whole definition of war. An exchange student named Quenser, who was dispatched to the battlefield, met at the base a girl with a strange aura. The girl, dubbed “Elite”, is the pilot of “Object”. The near future. This diminutive boy had come to take on the role of standing up against the strongest weapon “Object” for the sake of the girl. This was the motive for their first meeting.

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.

Noir, third son of a “beggar noble,” lost his job and was at a loss, but fortune struck just as he was contemplating becoming an adventurer.

A proud and talented singer

Silent and introverted godly writer

… and so on

These people who should have lived happily because of their outstanding strength, but because of some small accidents, their life sank into hell and went towards their death.

Before they died, they had been unwilling. Their unwillingness attracted Su He. Watching these suffering souls, the innocent and harmless teenager come towards them, “are you unwilling? Then give me your life. ”

From then on, the infamous son of the aristocratic family became a godly doctor that everyone admired

The talented singer whose voice has been destroyed/damaged was popular again

The godly writer who was scolded as plagiarist ascended the throne again

……

Su He smiled. Cannon fodder can also become a winner in life, sweep away the darkness, stand up again, these former geniuses will one by one blossom their own radiance.

- Description from Novelupdates