My Farm System: Reaching The Top In The Parallel Earth! - Chapter 10

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.

In the mysterious MMORPG 【ExoGenesis】, the extraordinary age of transcendence has arrived on Terra. Tristan is reborn on the very day the game launches, awakening an SSS-level talent: the Sniper God.[Sniper God (SSS-Level)]- Effect 1: All ranged attacks are guaranteed to hit, and the damage type is changed to true damage.- Effect 2: For every meter of distance from the target, damage increases by 10%.With such an overpowered talent, Tristan’s choice is clear—he becomes an assassin!With deadly precision and the ability to strike from miles away, Tristan proves that an assassin doesn’t have to fight up close.

Once Gu Qingjiu, she was fortunate enough to be born in the “best” family, ended up having a miserable and unjust life.

Reliving her life once more, Gu Qingjiu chooses to enlist in the military and bear the toughest hardships she has ever faced. Everyone says that she’s the least possible person to join the special forces. However, she manages to prove all of them wrong.

Good-for-nothing? Who’s the good-for-nothing? Is she a good-for-nothing when she can throw all of them onto the floor in a fight? Is she a good-for-nothing when she has results better than everyone else? She’ll prove all of them wrong.

Enter Helian Niancheng, the well-known, youngest major-general in Beijing. A banishment sends him into the basic ranks in a military camp as a new recruit. From then on, he meets a person that makes him dote on and protect at all costs, his beloved. However, his beloved is only focused on fighting and killing. Major-general Helian declares this to be a very bad, a very terrible situation. Yet, Gu Qingjiu merely replies,

“Scram! Lower your gun if you dare!”

Noah Brown had a gift for fighting. Unfortunately punching things didn't pay the bills, at least until he died and an Eldritch god found his soul. The encounter led him to a new world, summoned by bloody cultists, with nothing but the shirt on his back, and a strange item in his system menu.

[???] : A source of infinite potential.

Perhaps he'd finally get to put his gifts to good use.