Simplify the following text for a Grade 14 native English-speaking person.
Original: During World War I , Rommel fought in France as well as in Romania ( see : Romanian Campaign ) and Italy ( see : Italian Campaign ) , first in the 6th WÃ 1\/4 rttemberg Infantry Regiment , but through most of the war in the WÃ 1\/4 rttemberg Mountain Battalion of the elite Alpenkorps .
Simplified: In World War I , Rommel fought in France , as well as in Romania and Italy , first as a member of the 6th WÃ 1\/4 rttemberg Infantry Regiment , and then in the WÃ 1\/4 rttemberg Mountain Battalion of the Ã lite Alpenkorps .