Host, Please Be Honest! What Exactly Are You? - Chapter 59 The Time Was Right

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.

The worst student of Westroad Academy. The disgrace of the Blake House. A new soul enters the body of Frey Blake, who couldn’t overcome his miserable life and chose death instead. “What’s with this body? I’ll have to work on tuning it from scratch.” The Great Mage Lucas Traumen, with the body of Frey Blake, gains a chance at revenge!

[Urban Martial Arts, Passionate Martial World.] He was a super expert who, due to accepting an inheritance, underwent a physical transformation that put his life at risk. To extend his life, the king returned...

Through years of abuse and death threats, Ye Jian is not so ready to bid adieu to this world just yet! Fortunately, destiny has granted her another shot at life. Only this time, she is determined to become the master of her own fate and retaliate her oppressors from her previous life. It's payback time.Although reborn with beauty and youth, Ye Jian obviously holds higher pursuits. In this life, she is determined to become an extraordinary commando. No, she does not need love, family, or any affection!He is born in a powerful family; and step-by-step, he becomes the youngest Major General through his own merits. He is drawn to her every move, despite her repeatedly shunning him.“What you need is love, my little fox,” he whispers.“Get lost! I need bullets!” She steps away.Behold. Let this novel take you through the warm, happy, loyal, and passionate story of the aggressive military couple.