Complex sentence: Intended to protect marine communications in the Adriatic, the cruiser renamed with its original name NIOBE participated in the first phase of Operation Herbstgewitter that consisted of landings of German troops on the islands of Krk, Cres and Lošinj in November 1943.
Split into simpler sentences: Intended to protect marine communications in the Adriatic, the cruiser was renamed "Niobe" and participated in the first phase of Operation Herbstgewitter. This consisted of landing German troops on the islands of Krk, Cres and Lošinj in November 1943.