SorryImJustDiamond

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!!!

Donation link: https://ko-fi.com/sorryimjustdiamond

PS. Cover not mine, I just found it on google. If you are the owner and want me to take it down, then you can reach me in the comment section.

Reincarnated as an Imperial Prince

Inside the headquarters, Leonid gathered his crew in one of the many briefing rooms of the headquarters.

Leonid is one of the pilots of the new patrol aircraft of the Imperial Ruthenian Navy, the GiM P-Orion.  A copy of the P-3 Orion.

Alexander, being the owner of IDS, decided to save time thinking of names for each vehicle copy by erasing some letters and numbers from the full name or just creating anagrams of the names.

What took him and the IDS directors hours to finalize, took only minutes with an eraser on the back of an intern's pencil.

Seeing that his crews had arrived, Leonid began the briefing.

"So, we've been just tasked by the Central Command to neutralize any Yamato submarines sailing off the coast of Sakhalin. We will egress at 0940 HRS. At 1440 HRS, we will arrive at the Sakhalin airspace, where we'll meet up with the aircraft tanker Gagana to refuel,"

Hunter Killer