What's wrong with this lawyer?! - Chapter 839 - 269: Retract and Compensate Threefold? I Won’t Give a Single Cent!_3

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.

When I died I meet with this being who offered me a new chance at life, to actually become someone important and I agreed and was reborn as none other as the First Man.But to think that everything that I ever knew was nothing more than a lie, what am I going to do to survive in such a world?

In a world where magic is long but a thing of the distant past, where humans have the potential of harnessing a dormant power within them, called Battle Force…

A man from modern day Earth finds himself suddenly waking up in the body of Norton Lorist, a youth of noble descent that had been exiled from his homeland in the North by his family to Morante City, the capital of the Forde Trade Union on the pretext of pursuing his studies.

Little did he know what would await him when he receives summons from his family years later to return to the Northlands and inherit the position of the family head…

This is the tale of his life before the summons…

This is the tale of his journey northward and the allies he gathers along the way…

This is the tale of his rebuilding his family’s dominion and keeping it safe from other power hungry nobles…

This is the “Tales of the Reincarnated Lord”.

“A qualified gunner should have enough firepower coverage.”

“So my battery has a diameter of three thousand meters, which is very reasonable.”

After a grand fireworks, Chen Jiang looked at the shocked eyes of the passers-by around him and said seriously.

…

When all races were thrown into a world and started to fight, a world with the theme of survival began.

- Description from novelbuddy