It seems like the Ukranians studied military history, while the Russians ommited that from the curriculum. From the posted article:
the German Army had been expending irreplaceable resources in the attempt to defend the Normandy frontline. Also, the Allied air forces had air superiority up to 100 km behind enemy lines. Allied forces continuously bombed and strafed vital German logistical lines that provided reinforcements and supplies, such as fuel and ammunition.