Command Major Sergeant Michael Masson was in the 1st Battalion, 75th Ranger Regiment for most of his career, he became Command Major Sergeant (CSM) of Ranger Special Troops Battalion, then eventually assigned to Asymmetrical Warfare Group (AWG) to be CSM of Able Squadron.
Image and subtitle source: The 75th Ranger Regiment Facebook page
US. Army formed Asymmetrical Warfare Group (AWG) in 2005 in response to challenges conventional Army units faced in Iraq and Afghanistan. AWG is consisted mainly of operators from various Special Operations units. In Masson’s case, he brings in valuable experience and expertise from his career in the 75th Ranger Regiment. The AWG’s mission is to provide the support to conventional army units by attaching to them on their operations, observing and analyzing their foe’s threat and tactics, then advising and developing solutions and trainings for a unit to enhance their combat capabilities.
AWG operators were issued unique uniform set made by Paraclete for field wear. It has many features differs from standard ACU set such as Velcro style, pockets placements. AWG seldomly worn unit shoulder sleeve Insignia on operations.
Author’s note: The general information gathered on CSM Masson and units for this article has been published online by US. Army so no OPSEC has been violated.
GWOT museum 
I am curious as to where you got my husband’s uniform?
Ebay. A seller had bunch of his uniforms. I bought a couple then did research and came up with the public information about him online. In fact, I would love to learn more about your husband’s career.