Simplify the following text for a Grade 9 native English-speaking person.
Original: Theodor Eicke ( 17 October 1892 â `` 26 February 1943 ) was a German General of the SS , ( ObergruppenfÃ 1\/4 hrer ) , commander of the SS-Division ( mot ) Totenkopf of the Waffen-SS and one of the key figures in the establishment of concentration camps in Nazi Germany .
Simplified: Theodor Eike ( October 17 , 1892 in Hampont â `` February 26 , 1943 ) was an ObergruppenfÃ 1\/4 hrer of the SS and General of the Waffen-SS .