The Great War: Breakthroughs

The Great War: Breakthroughs is the third and final installment of the Great War trilogy in the Southern Victory Series of alternate history novels by Harry Turtledove. It takes the Southern Victory Series to 1917.

Its 1917, the Great War has proved very costly for both the United States and the Confederacy. After the seemingly endless stalemate that had been the first two years of war, the U.S. begin to slowly gain the upper hand, proving able to build and field armored forces more quickly and in greater numbers than the CSA. Their mobile "barrel" offensive proves decisive, as weak Confederate lines are unable to resist General George Armstrong Custer's advance towards Nashville, Tennessee. In the east, the U.S. are finally able to liberate Washington, D.C. from Confederate forces, though leveling most of the city in the process.

The war in Europe draws to a close, one year earlier than in our timeline as Russia is weakened by uprisings of servicemen and workers (leading to the abdication of Nicholas II as in our timeline, though Russian history diverges within the series after this point), French soldiers rise in mutiny (later leading to the overthrow of the Third French Republic and the establishment of a new monarchy under King Charles XI by 1930. The United Kingdom is cut off from important food shipments from Argentina after Brazil abandons the neutrality it had held since the beginning of the war and allies with Chile and Paraguay and attack Argentina.