Vizefeldwebel, and thus ended up flying combat over the Battle of Caporetto in northern Italy in a Fokker D.Va he dubbed "Mimmi". On 2 October 1917, he scored his second aerial victory, downing an Italian Savoia Pomilio at 1510 hours. After additional victories on 25 October and 30 November, he became an ace on 8 December 1917. He would tally one more victory with Jasta 39, on 11 January 1918.[2]
On 5 March 1918, Hippert was transferred back to the
Offizierstellvertreter. By this time, Hippert was flying a Fokker D.VII with a black and white checkerboard pattern on the fuselage, a blue nose, and the name "Mimmi" emblazoned on the top wing. On 7 June 1918, he shot down a Dorand AR2 over Beaumont-sur-Vesle for his seventh victory. On 22 August, he claimed two French bombers, a Caudron R.11 and a Breguet 14, though he was only credited with the former.[2]
At some point during the war, Wilhelm Hippert won the Iron Cross.[2]
