I have acquired several old uniforms for my squadron's historical display, and am wondering just how to properly display them without damage
Glass display would be the best route.
And out of direct sunlight! :)
Direct sunlight is not a problem, nor is a glass case. I was hoping for some guidance as to how to hang them or wether or not to put the uniform on a hanger or a mannequin?
I would use a manequin. You can get the dress maker's manequins on ebay relattively cheap. Those are the torso manequins that have no head or legs. They do nicely for display of coats and shirts. Flight suits work on these as well.