Chaos Warlord: Reincarnated in Eldrich with the Devil System! - Chapter 151 : Arms

Duke Jiu Qiansui, Du Gu Wu, was forced to marry the rejected woman Feng Bailin due to illness, causing an uproar in the court.The princes came to “congratulate”: Although Feng Bailin is ugly, incompetent, and from a declining family, she does not fear his reputation of being a wife-killer and impotent, and even conveniently lets him be a cheap father. Worthy of congratulations.Du Gu Wu, thinking of the talentless, unattractive, and unvirtuous woman, coldly said: After one year, I will divorce.One year later, Du Gu Wu booked the largest restaurant in the world, invited friends to prepare for the divorce.Unexpectedly, the restaurant owner directly offered three days for free, saying it was to celebrate the divorce. When the first beauty who was mingling with heroes from all roads burped, she said: “You think I'm after his body, I just crave his imperial fortune.”After Duke Jiu Qiansui was divorced,In the first month, a plague swept the whole city, and the medical deity appeared, it was actually Feng Bailin.In the second month, famine was everywhere in the country, the richest man provided disaster relief, once again it was Feng Bailin.In the third month, an alliance of nine dynasties besieged the city, and ten thousand beasts defended it, it was still Feng Bailin.In a certain month, Duke Jiu Qiansui traveled across the nine provinces and eight wildernesses to pursue his wife: Ancestor, please let me marry in.The two cute children said in unison: Father King, you have to wait in line!

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.

Kurono Maou is a high school student who is sensitive of his sharp eyes and bad expression. No girlfriend but gifted with friends in his own way, he had been living a peaceful life.