Complex sentence: With the 1991 reform of the Italian Army the battalions were converted again into regiments; so was the 28th Infantry "Pavia", who became the 28th Infantry Regiment "Pavia" on 17 September 1991.
Split into simpler sentences: With the 1991 reform of the Italian Army the battalions were converted again into regiments. So was the 28th Infantry "Pavia", who became the 28th Infantry Regiment "Pavia" on 17 September 1991.