Who is Marian Pes, "Zlee"?

Zlee is the daughter of a childhood friend of Ondrej. When Jozef is a teenager, the woman finds herself on hard times and brings Zlee to their house in Pastivinia, asking Ondrej if they will take Zlee into their home. Jozef and Zlee grow up as brothers, learning the same tricks as sharpshooters, trackers, and shepherds, becoming as close as brothers can be. When the war begins they join together, are promoted together, and fight together. Zlee is the steadier, less passionate side of Josef's personality, and as they shoot together in the way they seem to mesh well. He is a vital part of Jozef's life.