Global Examination - Chapter 14:

An editor at the prime of her life—and with maybe just a little too much free time—finds herself waking up in one of her favorite RPGs with no clue as to what's going on or how to get back home.This might be the part where others rejoice over getting whisked away to a world of wizards and magic, but she certainly doesn't think it's anything to celebrate about.After all, she woke up in the body of a small-time villain with some severe personality issues.

Kanzaki Ryoma transmigrated into the world of Tokyo Ghoul and began fusing with Uchiha Madara. Determined to bring an end to this twisted world, he chose to implement the “Eye of the Moon Plan” and ultimately activated the Infinite Tsukuyomi!

She is a descendant of an Ancient Chinese Aristocratic family. Having just transmigrated into a young lady’s body filled with aphrodisiacs, she had no choice but to pounce at a random man upon arrival.

Unexpectedly, not only did she get caught red handed, she’s also pregnant with child before marriage.

In the end, the baby she carried for ten months turned out to be a little fox, and it could cry “Mama” once born? Fortunately for her, the child is well-behaved, kind, and caringly protective of his mother.

In this world filled with both evil and good, this pair of mother and son will work together to destroy all their adversaries. As for the scumbag relatives who scorned them, they will make them pay dearly with regret in mind.

But then one day, baby fox’s father suddenly showed up, not only to steal the child, but to steal her too? How can there be such a good thing? This foolish father of his, didn’t even ask for little fox’s opinion?

Stabbing his hands to his hip, a certain little fox demands: “You want to be my father? First pay up then go behind the line. Mother, I think next door’s Uncle Wang is quite rich, you can just become Uncle Wang’s daughter-in-law.”

- Description from novelupdates

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.