MTL - Pirates: Swing a Knife and Become Stronger - Chapter 3 Special mission! Naval soldiers dissatisfied with the arrangement

I woke up in an unknown forest.

It seemed like this place was a fantasy world where strange-looking beasts ran rampant. And just like in a game, I seemed to be able to check my enemies’ and my ability.

Let’s hunt monsters and gather titles in order to level up and evolve into a Greater Dragon!

And I heard a mysterious voice in my head, “Let’s aim to be the strongest!”

Although it was only a marriage of convenience, Amelie Ashford was the perfect wife in every aspect. She was intelligent, obedient, and well-respected. She was kind to everyone and devoted to her husband. And she was perfectly content to spend the rest of her life like that, even though she was constantly nagged about getting pregnant. That was until her husband entered their house with a mistress by his side and eventually demanded a divorce.“Very well,” Amelie said calmly, “I will divorce you.”Richard's eyes shone as he heard his wife utter these words. However, to his surprise, she was not done. “But don't be surprised when you get an invitation to my next wedding.”To everyone's shock, Amelie indeed got married again, and to a younger and, as it turned out, richer man!And she made sure that her ex-husband realized what it meant to lose the support of a woman like her._____

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.

Mary was an only child. She came from an ordinary family and worked at a publishing house. She worked diligently every day but was always harassed by her manager.