[4] During the Kościuszko Uprising, he fought at the battle of Ravka and the Siege of Warsaw, being awarded the Pour le Mérite on 6 June 1794.

[1] When the Courbiere infantry regiment (number 58) was established in 1797, Horn was given command of one of its Grenadier companies.

[2] In 1812, Colonel Horn took part in the invasion of Russia, commanding the 2nd Infantry Brigade in Yorck's auxiliary Prussian Corps.

[2] In the German campaign of 1813, Horn commanded a brigade in Yorck's I Corps of the Army of Silesia.

[4] After the end of the Napoleonic Wars, Horn was appointed commander of VII Corps headquartered in Münster, a post he held until his death on 31 October 1829.