Nejedná se o výraz "irfant", nýbrž "infant", viz adresa níže
http://www.napoleon-series.org/military/organization/Austria/infantry/c_austrianinf3.html#29Infantry Regiment Nr. 29 (German)
Regimental Designations and Colonels-in-Chief:
1791-1803: Infantry Regiment 'Oliver, Graf Wallis' Nr. 29 (Wallis von Karighmain, Feldmarschalleutnant Oliver, Graf) [1]
1803-1815: Infantry Regiment 'Freiherr von Lindenau' Nr. 29 (Lindenau, Feldmarschalleutnant Karl-Friedrich, Freiherr von)
Colonels:
1799: Hirschligau, Oberst Wilhelm
1805-1809: Hammer, Oberst von
1809-1813: Pfluger von Lindenfels, Oberst Philipp
1813-1815: Nennel, Oberst von
Subordinate Officers (1799):
Croll von Herzberg, Oberstleutnant Carl
Tegethoff, Oberstleutnant Josef
Luconedi, Major Franz
Notes:
[1] Feldmarshalleutnant Oliver, Graf Wallis von Karighmain assumed command of the Austrian 'Army of Lombardy' in Piedmont in 1795. He was promoted to Feldzugmeister, but later replaced by Feldzugmeister Jean de Beaulieu.