The Reservist (Order of the Centurion, #5)

They promised him one weekend a month. The House or Reason swore the 9th would never leave their gentle homeworld. But after Kublar, things changed for Sergeant Fetch and the Caledonian Reserve Legion Corps. Thrown into a meat grinder conflict in a desperate bid to hold the line, it doesn’t matter whether you’re reserve or active, only that you kill and survive. A searing tale of combat and honor at any price from a wounded veteran of the War in Iraq who fought to keep the MSRs open from Mosul to Tikrit.