Reborn at Boot Camp: General, Don’t Mess Around! - Chapter 4632: Handsome, Handsome

When the storm struck, they chose Kogan as a sacrifice to save their city... but he found himself in an unknown world, surrounded by strangers who knew nothing of their fate. In a land teeming with enigmatic entities and lurking dangers, Kogan will soon realize that his survival was no miracle, but the beginning of a harrowing trial. Will he find a way to escape, or is this place the grave that was destined for him all along?

of the family. He had to care for his grandparents in place of his father, show respect to his uncles, maintain brotherly love...In this life, he only wanted to breat free from these bloodsuckers, find a sugar “daddy”, and by the way, nourish his stomach.*****Song Jiawen felt something was weird. That guy from next door—who had to return to the countryside to study because his father was imprisoned—suddenly switched from literature to science and joined her class, and even moved to the seat behind her. Ostensibly, he did it so she could tutor him in physics and biology, but why did she always feel like he had an ulterior motive?*****Years later, as Jiang Yan watched the soup simmering in the pot while soothing his son in his arms, he glanced back at his wife, who was leisurely watching TV on the sofa with her legs crossed, and thought miserably, this meal ticket he had married into was proving to be quite a struggle!

In her last life, she was miserable and ordinary. This time, she got into the fashion and was reborn in another world. She was still the same person… even with the same body and face. What was the point of reincarnation? A childhood companion? He always pulled her hair and made troubles for her? A handsome boy? The boy never looked at her and was 15 years older than her! A prestigious teacher? The teacher spent his days eating and drinking, coaxed, played tricks, and controlled others… Too scary and better run away? No no no, such a challenging life was bound to be wonderful! Now let me take you back to the 70s and live a fast life!

- Description from Novelupdates

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.