Civil War — Mike Gullickson

In the first novel, John Raimey, a crippled soldier, sacrificed himself for duty and family and became the first Tank Major, a bionic soldier powerful enough to level buildings. His sacrifice was in vain. Ten years later, mentally ill, estranged from his daughter, and stationed in Africa to protect the mines needed to keep cyberspace alive, he airdrops into a town where the adults are murdered and the children abducted. What Raimey uncovers sets him on a new mission: save his daughter, no matter the cost.