MTL - Night Ranger - Chapter 18 Headless girl

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.

On the engagement night, after being betrayed by her fiancé, Ye Shu decisively turns around to marry Shen Shaochen, the number one abstinent male god of Jin City, in a flash marriage.After marriage, she thought that just by quietly giving birth to an heir to the wealthy family, all would be well.Little did she know that serving the great demon king would be so frustrating.Quit smoking, quit drinking, quit gaming!Ye Shu silently grits her teeth and endures, and on the day the baby is born, she brings the divorce agreement, “Mr. Shen, the task of bearing a child is completed, please sign the divorce.”Shen Shaochen: “Mrs. Shen, the agreement didn't say that only one child would be enough...”Ye Shu begs for mercy, “Husband, I was wrong! I won't divorce anymore.”(1V1, both male and female leads are clean and committed.)

“Your Majesty, the pirates are coming!” said a soldier in panic.

“Don’t worry, let the ninja assassinate the tactical troops to solve them.” Pulkit smiled.

“Your Majesty, the naval fleet came over, the leader is the three Admirals!” Another soldier panicked.

“Three Admirals? Let the Kenpachi Zaraki team handle that.” Pulkit smiled.

“Your Majesty, the Four Emperors came to attack!” Another soldier panicked.

“Don’t mess, go and call the dragon!” Pulkit smiled.

“Your Majesty, the revolutionary army united with the world government and the world’s pirates all over!”

Another soldier was alarmed. Pulkit wears the Pluto God clothes, pick up the sword around, his eyes turned into Rinnegan, stood up and sneered, “just right, today they will be wiped out.”

- Description from Novelupdates