Edited sentence: Hitler called Günther von Kluge and von Manstein to his Wolfsschanze headquarters in East Prussia and declared his intention of calling off Operation Citadel.On 10 July, in the midst of Citadel, US, Canadian and British forces landed on Sicily during Operation Husky.Some German units immediately departed for Italy, and only limited attacks continued in the south, to get rid of a Soviet force squeezed between two German armies.Von Manstein argued that one final effort could win Kursk, but Hitler disregarded it, particularly as the Soviets had launched their counteroffensive in the north