Mezue ahịrịokwu na-esonụ: N'afọ 1813, ọ kwadoro nkwekọrịta maka nchebe nke onwe ya na Austria; ma mgbe
Agha Lützen (1813), eze Saxon laghachiri na French fold na Dresden. Langenau gbara arụkwaghịm ma lụọrọ Austria ọgụ. Na 27 Julaị 1813, Langenau bụ Major General na General Staff. Na Dresden, 26 Ọgọstụ 1813, o nwere ihe ịga nke ọma n'iwere ọchịchị site n'aka onye merụrụ ahụ Major General V. Frierenberger. Na Leipzig, 16 Ọktoba 1813, Feldm. Onye isi oche-onye isi oche. Reisner nyere Langerau nke etiti na batrị aka ekpe, jikọtara n'ebe abụọ, ma mechie egbe ndị iro. N'abalị iri na asatọ n'ọnwa Ọktoba, Langerau bụ onye mbụ chụpụrụ ndị iro na ndagwurugwu Wachau. Langerau duziri ndị agha na agha ndị dị nso na Hochheim (na 9 November 1813). Ọrụ ya dị ka Quartermaster-General nke Ndị Agha Ukwu nke Bohemia, na 1814, na nke ndị agha Rhine, na 1815, n'okpuru Schwarzenberg, mere ka a mata ya n'ụwa nile. Joseph Radetzky von Radetz jere ozi n'okpuru ya na 1814.