The Amusing Adventures of a Directionally Challenged Dad and Daughter - Chapter 46: Evading Military Service

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.

She regards him as an elder, respects him and esteems him; he cherishes her to the core, loves her deeply, and spoils and protects her—Shi Nuan married Song Yansheng, the business legend of T City, and this man was once her fiancé's Second Uncle!One day, Shi Nuan invited friends to her home.Friend: “Nuannuan, Mr. Song takes such good care of you, I'm so envious!”Shi Nuan blushed: “It's all for show, in private he's... quite indifferent to me!”That night, Song Yansheng embraced his little wife, his voice magnetic: “I heard you feel I'm indifferent to you?”Shi Nuan: “...”[Heartwarming true love, deep affections not too late, an uncle-loving story with an eight-year age gap, guaranteed quality. Recommended past works: 'World's Deepest Love', 'First Warm Marriage of the Noble Family', 'First Marriage of the Rich', new book 'Mr. Gu, You're Missing Me!']

One will to create oceans. One will to summon the mulberry fields.

One will to slaughter countless devils. One will to eradicate innumerable immortals.

Only my will… is eternal.

Welcome to Freia. A continent where evil magi ruled. Until firearms came, that is. Now the people live free of those demons…

More, however, must lurk beneath the surface.

Claude, a transmigrator from another world, finds himself in the midst of this changing world, attending ‘middle school’. Or, as he calls it, ‘boot camp’. His destiny was to graduate and join the military, but the future is seldom so simple.

His life, and the world, is set on the path of upheaval and chaos the day he finds a cookbook.

A magical cookbook.

- Description from novelupdates