The thesis explores the life and work of earl Carl Heinrich August of Lindenau, crown equerry of Prussia, focusing on his contributions to Prussian horse breeding. The first part presents a chronological biography, though limited sources reveal little about his private life. Born in 1755 in Machern, near Leipzig, Lindenau received a strong education for his time, studied in Switzerland, and served in both the Austrian and Prussian armies, ultimately becoming crown equerry under King Friedrich Wilhelm II. Lindenau significantly reformed Prussian horse breeding by inspecting royal horses and eliminating those with hereditary defects. He reorganized the Trakehnen stud farm, establishing it as a key player in Prussian horse breeding, and founded the Friedrich-Wilhelm-Stud Farm near Berlin for breeding main stallions. He authored the Landgestütreglement in 1787, which set strict breeding regulations and was translated into three languages for broader impact. He personally managed breeding plans for stallions at the stud farm and inaugurated the veterinary academy in Berlin in 1790, enhancing veterinary education by sending faculty abroad for training. After resigning from the army in 1798, Lindenau faced challenges following Prussia's defeat in 1806, leading to the closure of the Friedrich-Wilhelm-Stud Farm and significant reductions in horse numbers. He requested dismissal as crown equerry two years later and participated in t
