Leutnant Hans-Georg von der Osten began his career as a World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 flying ace

Flying ace

A flying ace or fighter ace is a military aviator credited with shooting down several enemy aircraft during aerial combat. The actual number of aerial victories required to officially qualify as an "ace" has varied, but is usually considered to be five or more...

 credited with five aerial victories. He later rose to command of all Luftwaffe

Luftwaffe

Luftwaffe is a generic German term for an air force. It is also the official name for two of the four historic German air forces, the Wehrmacht air arm founded in 1935 and disbanded in 1946; and the current Bundeswehr air arm founded in 1956....

 bases in Germany, during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

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After service in the 3rd Uhlans Rgt. he joined the Air Service in February 1916, serving with FEA 9. He then instructed for a spell before transferring to Jasta 11

Jasta 11

Royal Prussian Jagdstaffel 11 was founded on 28 September 1916 from elements of 4 armee's Keks 1, 2 and 3 and mobilized on 11 October as part of the German Air Service's expansion program, forming permanent specialised fighter squadrons, or "Jastas"...

. He was acting commander of the Jasta in Jan-feb 1918, before taking over jasta 4. On 28 March he was shot down and wounded by fighters while flying a Pfalz D.III, seeing no further action during the conflict.

During the second world war he served with in a Luftwaffe staff role.