Mittrowsky led a division in the army of Archduke Charles at the Battle of Caldiero in late October 1805. During the period 1806-1809, he was deputy to the commanding general in Upper and Lower Austria and Salzburg. Emperor Francis II appointed him proprietor of the "Anton Mittrowsky" Infantry Regiment # 10 in 1806. (A relative, Joseph Anton Franz Mittrowsky was proprietor of Infantry Regiment # 40 from 1786 to 1808.) Anton Mittrowsky remained proprietor through the War of the Fifth Coalition until his death in Vienna on 30 September 1809.