You wear your MOS branch. Unless you are going to a Cav unit when sometimes they like to be special and want to wear cross sabers. I would show up with your MOS branch and if the unit has some kind of SOP where they wear something different your squad leader or platoon sergeant will let you know. Good luck.
Read the question... Branch Insignia relates to MOS Some units do wear a unit insignia...ie, SF, instead of individual MOS insignia. In an ordinary unit, let's say an Infantry company... line Soldiers will wear their cross rifles, commo folks will were their crossed signal flags. Maintenance/Ordinance/Medics...all have their own insignia. NOW, there used to be a time when you were assigned to a unit, you wore that specific insignia. I was a mortarman (Infantry) assigned to the Armored Cav. The CSM at the time made us all were the armor insignia. As the senior Infantryman in the Squadron, I put an end to that.
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