Otto Kirchner was a Obersturmführer

Obersturmführer

Obersturmführer was a paramilitary rank of the Nazi party that was used by the SS and also as a rank of the SA. Translated as “Senior Assault Leader”, the rank of Obersturmführer was first created in 1932 as the result of an expansion of the Sturmabteilung and the need for an additional rank in...

 (First Lieutenant) in the Waffen SS 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...

. He was awarded the Knight's Cross of the Iron Cross

Knight's Cross of the Iron Cross

The Knight's Cross of the Iron Cross was a grade of the 1939 version of the 1813 created Iron Cross . The Knight's Cross of the Iron Cross was the highest award of Germany to recognize extreme battlefield bravery or successful military leadership during World War II...

. Which was awarded to recognize extreme battlefield bravery or successful military leadership by Nazi Germany

Nazi Germany

Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 during World War II.

Obersturmführer Otto Kirchner was awarded the Knight's Cross on the 21 April 1944, when with the HQ Squadron, 16th SS Cavalry Regiment, 8th SS Cavalry Division Florian Geyer.
He did not survive the war but was killed in the closing days on the 3 May 1945.

Further reading