The Survivalist Series by A. American
The Survivalist Series starts out with one man, Morgan Carter forced to walk home after an EMP strike. His walk of 250 miles takes his through a series of challenges and he meets a few new friends along the way. The series wraps around the community Morgan built, including his family, friends, soldiers and even outsiders. The DHS is cast as an evil entity in the story and much of the fighting is between Morgan and the DHS and The military against DHS. There are raiders in cahoots with the DHS as well as many desperate and hungry people willing to kill for a meal.