Black Cat and Soldier is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

Within this battlefield is a cat. Arthur Rain is a mercenary and skilled sniper who is feared as the “Wild Hunt”. As he prepares for another day of sniping, a black cat appears before him. A cat that seemed like a stray who had taken up residence on the battlefield, happily playing with an empty bullet cartridge like it was a toy. This is the story of one man and one animal living in a deadly battlefield, trying to make the days a little more lively.