Simplify the following text for a Grade 5 native English-speaking person.
Original: The insignia for StandartenfÃ 1\/4 hrer consisted of a single oak leaf displayed on both collars .
Simplified: The insignia for StandartenfÃ 1\/4 hrer was of a single oak leaf worn on both collars and was the first of the S.S. and S.A. ranks to be worn on both collars .