He slowly wrote about the first zombie he faced beside the regular zombie naming it the 'Bitter'. This was the zombie which he faced when he was moving towards the electricity room to turn the electricity on. This was quicker than the common zombies he faced till now but was still equally dumb like the regular one.

The only difference this one had was its speed. It ran like an average human which was a feat for a body without a properly functioning brain. He also noticed these zombies would be a big problem if they come in hordes at him. He would not be able to overcome it.

The next zombie was the fat one, which he almost died to when he exited the room. This was extremely strong and had enough power to put a dent into a car. But for the enormous power it had, it's speed was very slow. It was slower than a normal zombie and equally dumb too. Mark named these kind, 'Bloater'

It had a very thick skin, which didn't properly cut a normal sword. He could have faced this one if it wasn't for the surprise damage he got in the start. He could still feel the pain in his ribs, even if the external wounds got cured.

But the main doubt he had in his brain at the moment was what made these zombies evolve or diverse into different ones. Were these like that since the humans got bitten or did a particular catalyst act upon the body to bring different changes and he wanted to understand this.

If he found this answer, a lot of problems can either be created or solved. If they were like that since the beginning, that means they were rarer and less compared to the normal ones. But if they evolved to that state, it means that as long as the zombies survive then they can become stronger.

Thinking about all of this bought a headache for him. He slowly closed the book after filling the information on the new zombies. He kept the bag down and went back to sleep. He could think about this after he goes out again.

As Mark slept once again, meanwhile in General Cox's room, there was a closed-door discussion on him between the general and doctor Susan. They were precisely talking about Mark.

"Do not tell this to anyone else, Susan. This might potentially create problems for us. We do not want to have more enemies than what we are already facing right now." closing a folder on his desk.

"But General…" said Susan, trying to persuade him.

"I said NO, Susan. Even though what you discovered is fantastic. We can't create more problems. Take this as my gut feeling from my experience in the army, but only more disaster would come if we make that kid our enemy than an ally."

"Alright General. I understand." finally, reluctantly nodded.

"Thanks for understanding, Susan. Now tell me according to your experience in how many more hours will he be back to full health." with a smile.

"By the current progression, I suspect another 3 days at max." making Donald nod.

"Alright, then Susan is this all?"

"Yes General. I will take my leave now." and turned back. But before she reached the doorknob, she heard the General again, "Remember Susan, No one should get to know about this."

Susan nodded without turning back and went out of the room. Donald exhaled in exhaustion as he looked at the folder again.

"Recovering within 3 days for an injury which normally takes a month to recover, this is really some problem creating news." sighed Donald while massaging his head.

These were Mark's reports of the past 3 days, and how unusually the wounds recovered over these days. Susan initially wanted to ask the General to at least take some blood of his if not run tests on him. But the General rejected her proposal immediately.

He had the feeling that it was better to make Mark an ally since the moment he met him on the bed. Listening to his gut, which helped him over the course of his military life, he rejected it.

What Donald did not know was that his decision to enclose the information saved the whole settlement from Mark's future wrath. Mark would be a complete enemy of the camp if he gets to know that the military was considering making experiments on his body and blood.