Already at the age of 5, he joined the Infantry regiment „Kronprinz“. In 1740, his brother named him commander of Infantry regiment Nr 34. In 1756, he became Major General and accompanied his brother the King on his campaigns in Saxony, Bohemia, and Silesia. He fought in the Battle of Breslau and the Battle of Leuthen. But in 1758, bad health forced him to leave the army. In 1762, he purchased Friedrichsfelde Palace near Berlin. Ferdinand is also remembered for having the Schloss Bellevue in the Berliner Tiergarten built in 1786, today seat of the Presidents of Germany.