It's 1944. The world is plunged deep into war. American troops are on the verge of crossing into German territory. The war has dragged on for years. Heavy bombers and fighter planes have regularly made incursions on Berlin. Tanks, Marines, A.T. guns, and bunker-busting assault guns stand at the ready, waiting for direction from their commander.
But their commander in chief isn't Franklin Delano Roosevelt; it's Harriet Tubman. The Germans (technically the Prussians) are led not by Adolf Hitler but by Tecumseh. The war started way back in 1882. The Japanese, Soviets, and Brits are nowhere to be found, but the Americans have found a loyal democratic ally in Charlemagne, leader of the Qing civilization.
It's just another day in Sid Meier's Civilization VII.