Book excerpt: The Civil War historian and author of A Season of Slaughter continues his engaging account of the Overland Campaign in this vivid chronicle. By May of 1864, Federal commander Ulysses S. Grant had resolved to destroy his Confederate adversaries through attrition if by no other means. Meanwhile, his Confederate counterpart, Robert E. Lee, looked for an opportunity to regain the offensive initiative. “We must strike them a blow,” he told his lieutenants. But Grant’s war of attrition began to take its toll in a more insidious way. Both army commanders—exhausted and fighting off illness—began to feel the continuous, merciless grind of combat in very personal ways. Punch-drunk tired, they began to second-guess themselves, missing opportunities and making mistakes. As a result, along the banks of the North Anna River, commanders on both sides brought their armies to the brink of destruction without even knowing it.