During the 1805 Campaign he commanded the vanguard of Prince Pyotr Bagration Corps and participated in actions at Lambach, Amstetten (receiving the Order of St. George of 3rd degree, 24 January 1806) and Schöngrabern. After the Battle of Austerlitz he protected the retreat of the Russian Army. He became chief of the Pavlograd Hussar Regiment on 23 July 1806, and commander of the cavalry brigade on 23 October 1806. Czaplic participated in the Prussian campaign and distinguished himself at the Golymin, Allenstein, and served as commandant of Königsberg for two weeks.