Born and raised in rural america Walker grew up in a small farming community, and during his youth once he was old enough he'd spent his time either hunting or learning listening to tales from his father's time in service. During teenage years he'd start to take an interest in medicine and eventually he bought himself a few medical books on basic medical knowledge that complemented his already well developed survival skills that his father taught him. Once he graduated high school Walker immediately went to his local recruitment office and enlisted into military service as a combat field medic. During his time in basic he learned all he needed to further expand on his medical knowledge and other skills he'd had developed as a child before long he was deployed alongside an Infantry unit. During his time in the army Walker quickly rose in ranks and eventually tried out for the rangers, though only barely getting accepted which allowed him to further expand his skill set and test himself further. Just when it looked like the sky was the limit the outbreak in Chernarus had started and Walker along with his unit were deployed as an Attachment to NATO forces to gain control of the situation of the outbreak, But after each week it became harder and harder for their forces to hold the ground and eventually they were pushed back and almost fully wiped out by the large numbers of infected that stormed their camp. Walker has been wandering Chernarus ever since unsure if anyone from his unit were still alive or just how wide spread the infection has gotten.