Complex sentence: He was then removed from office in the Frankfurt Zoo (see below), fined, and sent for denazification where, on 23 March 1948, it turned out he was innocent (Category 5; Exonerated) and had participated in the Resistance War.
Split into simpler sentences: He was then removed from office in the Frankfurt Zoo (see below), fined, and sent for denazification. On 23 March 1948, it was determined that he was innocent (Category 5; Exonerated) and had participated in the Resistance War.