Douluo Dalu 2: The True God King - Chapter 106: [DD2]:

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.

“I swear I will make them pay with everything I have. I will use my very own blood to sign the documents that will end them if I must!”To Champagne Gold, life was always like a fast-moving truck with no brakes and a drunk driver, one she couldn't avoid.At the age of five, she lost her parents in a helicopter crash. Life after that was one problem to another but she held on... until her grandfather passed away as well.With his death came the loss of her position of CEO and her hard-earned shares. As if that was not enough, she was served with divorce papers and the revelation of her husband's adultery with her cousin.Dealt with one too many blows, Champagne sought to end it all. Perhaps she could be reincarnated or whisked away to another world like the books she read before, but that was not to be. Instead, a mysterious man entered her life.“Rather than escape like a coward, I can give you the power and resources to carry out your revenge. I have but one condition―marry me.”Champagne held her lips between her teeth and took the offer.However, just when she believed her new life was going smoothly, she found out another painful secret. One more painful than any she had discovered before.She had undergone a uterus removal procedure and she didn't even know it.Now Champagne is more determined than ever to get revenge on everyone who wronged her. She would do and give everything to make them pay for taking away something so precious from her.

When he first crossed over, Chen Liguo did not want to accept it.

Chen Xiaoyun, an orphan from Guangzhou, China, once met a girl who looked remarkably like him. Before he could learn more about her, a deadly virus was unleashed around the globe.Humans turned into creatures straight out of video games and movies, and zombies and mutants roamed the streets with no one to stop them.From tanks to jockeys to even invisible zombies and mutated dogs. The mutations are just endless.“Why is there a zombie apocalypse just as I find my family? And why can I suddenly create things from thin air?”Will Xiaoyun survive the chaos with the new people he meets along the way? Will he use his newfound abilities to bring peace to a devastated world?Or perhaps he will just take another nap in the bed like a lazy pig——“Shut up. How am I supposed to do anything when you keep throwing women at me?”