Operation Citadel (German: Unternehmen Zitadelle) was a German offensive operation in July 1943 against Soviet forces in the Kursk salient, proposed by Generalfeldmarschall Fritz Erich Georg Eduard von Manstein during the Second World War on the Eastern Front that initiated the Battle of Kursk. The deliberate defensive operation that the Soviets implemented to repel the German offensive is referred to as the Kursk Strategic Defensive Operation. The German offensive was countered by two Soviet counter-offensives, Operation Polkovodets Rumyantsev (Russian: Полководец Румянцев) and Operation Kutuzov (Russian: Кутузов). For the Germans, the battle was the final strategic offensive that they were able to launch on the Eastern Front. As the Allied invasion of Sicily began, Adolf Hitler was force