Cyborgs.

The word cyborg was used to refer to the Ukrainian defenders of the Donetsk airport in the war zone, Eastern Ukraine from 28 September 2014 till 21 January 2015 (3 months, 3 weeks and 2 days). On 21 January, Russian forces overran Ukrainian positions at the airport. The remaining Ukrainian forces were either killed, forced to retreat, or captured.
https://youtu.be/Pz6wWUoiiyI

The name "cyborgs" was first applied to these soldiers online, and spread from there into the Ukrainian media. It refers to the way that the airport defenders were able to fend off constant attacks by Russian forces in close quarters with little sleep or support.
The term "cyborg" is usually applied to the following units: 3rd Spetsnaz Regiment, 93rd Mechanised Brigade, 79th Airmobile Brigade, 17th Tank Brigade.
https://youtu.be/Pz6wWUoiiyI

Movie "Cyborgs" was made about them and will premier on December 7 2017.
From the movie:"Volunteer Anton Yasynsky, call sign "Major" arrived at your disposal."
"Have you ever served in the army?"
"No."
"I have to... I must be here..."

"And what are you feeling... when you are killing people?"

"Mum, do not panic, I can't talk now. We have a rest hour."

"Don't be afraid, it's like a game, computer game. You will kill and move up one level, understand?"

"You did not have an order to open fire."
"So we should have surrendered?"

"What wind brought you here?"
"We are from Voronezh region."
"Ah... Golden ring. Why the hell did you come here?"
Link to the trailer:
https://youtu.be/Pz6wWUoiiyI