Johann von Thielmann
Entering the Saxon cavalry in 1782, he saw service against the French in the Rhine campaigns and served on the side of Prussia in the Jena campaign. After the disaster of Jena, Thielmann was sent by Saxony as ambassador to Napoleon I, became his ardent admirer, and did much to bring about the Franco-Saxon alliance. Thielmann accompanied the Saxon contingent which fought at the siege of Danzig and at Friedland.
In 1809, as colonel of Freikorps, he opposed the advance of the Austrians into Saxony, and was rewarded for his services with the grade of major-general, further promotion to lieutenant-general following in 1810. As commander of the Saxon Heavy Cavalry Brigade he took part in the advance on Moscow two years later, and his exceptional bravery at Borodino attracted the attention of Napoleon, who took Thielmann into his own suite. His own sovereign at the same time made him Freiherr.
In the war of the Sixth Coalition, Thielmann, now von Thielmann, took a prominent part. As governor of Torgau, by his king's orders he at first observed the strictest neutrality, but on receipt of an order to hand over the fortress to the French he resigned his command and, accompanied by his staff officer Aster, joined the allies. As a Russian general he was employed in reorganizing the Saxon army after Leipzig, and in 1814 he commanded the Saxon corps operating in the Low Countries.
Early in the following year he became a lieutenant-general in the Prussian service, and in command of the 3rd army corps he took part in the Waterloo campaign. From the field of Ligny he retired with the rest of Blücher's army on Wavre, and when the other corps marched towards Waterloo, von Thielmann defended this movement against Grouchy, fighting in the Battle of Wavre (18–19 June 1815), thus contributing materially to the victory at Waterloo.
- Regarding personal names: Freiherr was a title, translated as Baron, not a first or middle name. Before 1919 preceding the first name, former titles are with people alive after 1919 dependent parts of the surname, thus preceding the main surname and not to be translated. The female forms are Freifrau and Freiin.
- Carl von Clausewitz, author of the influential book On War, was appointed von Thielmann's chief of staff.
- von Hütel, Biographische Skizze des Generals von Thielmann,Berlin, 1828.
- von Holzendorff, Beiträge zur Biographie des Generals Freiherrn von Thielmann, Dresden, 1830.
- von Petersdoff, General Johann Adolf Freiherr von Thielmann, Leipzig, 1894.
- Chisholm, Hugh, ed. (1911). "Thielmann, Johann Adolf, Freiherr von". Encyclopædia Britannica (11th ed.). Cambridge University Press
- "Thielmann, Johann Adolf, Baron". New International Encyclopedia. 1905.