The Allied invasion of Sicily was the largest amphibious operation conducted in World War II with over seven assault divisions landing across Italian beaches. The planning and conduct of HUSKY was fraught with indecision, fragmented planning, poor coordination, and a lack of unity of effort. Husky proves to be an interesting case study of the operational level of war and provides several relevant lessons for today's commanders and joint staff officers. This paper analyses the Allied planning effort form the operational level of war only. Specifically, this paper analyses the planning and conduct of HUSKY against the following seven operational functions: operational intelligence, operational command and control, operational movement and maneuver, operational command and control warfare, operational fires, operational protection, and operational logistics.