Former 1st Special Operations Command, 13th Support Battalion Beret Flash—redesignated 528th Support Battalion which became the 528th Sustainment Brigade (Special Operations) (Airborne)
This graphic was created by User:McChizzle using images from the World Wide Web and publications, such as:

https://www.ebay.com/itm/194040990702
"Beret Insignia of the U.S. Army," by William A Hudspeath, published by Richard W Smith, Hendersonville, dated 1987, ASIN B06XD7DSY9 (drawing #483)
User:McChizzle