Task: Text Simplification
Input (English): they were then replaced by the 4th armored division in 1957 , which was redesignated as the 1st armored division in 1971 and moved to hindenburg kaserne in ansbach in 1972.
Output (English): they were replaced by the 4th armored division in 1957 . in 1971 they became the 1st armored division and relocated to hindenburg kaserne in ansbach in 1972.