Immortality from Taming Elephant - Chapter 409 - 199: Regardless of Anything, No Boundaries Between Man and Ghost (Part 2)

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.

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Su Mo, a young man of the modern times, transmigrated to the world of martial arts.The sole survivor of the declining Su family, he inherited the Ziyang Escort Agency, a courier service that was on the brink of collapse.Su Mo was determined to restore the family business to its former glory, but he was young and inexperienced. And the martial arts world was fraught with dangers and intrigues!Unexpectedly, a system popped up that rewarded him each time he completed a courier mission.With this reward system, Su Mo entered an unprecedented realm. He mastered the Longxiang Wisdom Divine Skill which transformed his internal Qi and gave him boundless energy and stamina to accomplish his missions.Still, troubles came knocking on his door as he embarked on his missions, from escorting a benign scholar to delivering a mysterious brocade box for a dying man.Could Su Mo avoid getting tangled in other people's affairs? And would he survive the storms and gain a foothold in the treacherous martial arts world?

Travel through the world of pirates and get the red police explosion system, with tens of billions of explosive troops, subvert the world!

He is known as the worst criminal in history. In order to kill the admiral, he sent millions of soldiers. He is known as the world’s worst criminal!

His mind-controlling device can transform the navy: “Five old stars, take a look, in the navy, which one of us has more people?”

His self-explosive soldiers frightened cp0, and his radiation soldiers made the four emperors retreat.

His super-time air soldiers made Tianlong people sleepless, and his super weapons and bullets made the general escape from danger…

“I’m here to give you an ultimatum! You’ve been surrounded by me!” On top of the war, Ren stood alone on the top floor of the Navy Headquarters, watching the two sides fighting and said calmly.

At the same time, a channel was opened behind him, hundreds of millions of mobilized soldiers, magnetic blast infantry, biochemical soldiers, self-explosive soldiers, pilots… tens of millions of prismatic tanks, aircraft cannons, and even super weapons, yes For the superhumans present!

“Wuluoxing, how many teachers do you have?”

(explosive flow)

- Description from novelbuddy