Simplify the following text for a Grade 9 native English-speaking person.
Original: Werner Eduard Fritz von Blomberg ( 2 September 1878 â `` 14 March 1946 ) was a German Generalfeldmarschall , Minister of War and Commander-in-Chief of the Armed Forces until January 1938 .
Simplified: Werner Eduard Fritz von Blomberg ( 2 September 1878 - 14 March 1946 ) was a German leader of the military until 1938 .