 Complete the following phrase:  Ludwig Kübler 2 September 1889  18 August 1947 was a German General der Gebirgstruppe Lieutet General who commanded the 1st Mountain Division, XXXIX Mountain Corps, 4th Army and the Operational Zone of the Adriatic Littoral during World War II. He was awarded the Knights Cross of the Iron Cross for his actions commanding the 1st Mountain Division during the invasion of Poland in 1939. He also commanded the division during the invasion of France and the Low Countries before being appointed to command XXXIX Mountain Corps. During his command of this corps it was involved in the invasion of Yugoslavia and the 