However, the Grenzers were first and foremost skirmishing troops and were thought not to perform as well in the role of line infantry as the regular regiments. As such, many in the Austrian military command did not hold them in much esteem. Following a mutiny in 1800, their numbers were reduced from 57,000 to only 13,000. Despite this, the Grenz infantry performed consistently well in battle, especially at Marengo and Austerlitz, earning them respect from the French. Napoleon held them in high opinion and considered them as the most warlike troops in the entire Austrian army. He had no hesitation in using the Grenz infantry after Austria's defeat in the War of the Fifth Coalition in 1809. The Treaty of Schönbrunn compelled Austria to cede territory in the Military Frontier and the 1st, 2nd, 3rd, 4th, 10th and 11th Grenz Infantry Regiments went into French service. They fought for Napoleon until his defeat and abdication in 1814.