 As the train rounded a curve within of Vienna, one of the men spotted some Confederate cavalrymen on a nearby hill.As the Ohio soldiers prepared to shoot at the horsemen, the Confederates fired their cannons from their hiding place around the curve.The Union force suffered several casualties but were spared from incurring even more by the slightly high initial cannon shots and by quickly jumping from the slow–moving train and either running into nearby woods or moving into protected positions near the cars.