This is the second novel in Harry Harrison's alternate history trilogy, continuing the story of the war between the United States of America and the British Empire. In the midst of Civil War, a stunned North and South join forces to combat a sudden attack of British troops. Though the Americans are victorious, three years later a new threat emerges. Her Majestys Army is massing for a possible attack through Texas. Into the gauntlet Lincoln sends his chosen angel of death, General Ulysses S. Grantwhile his top soldiers, including Robert E. Lee and William Tecumseh Sherman, plan the most daring naval invasion ever launched: an assault on British soil itself.