I have been given about 500 brass that are stamped with a triangle, 89, and 9mm. The other Brass are stamped with a symbol, WWC, and 01. Are they worth cleaning, depriving, and reloading? I don't try to reload military rifle brass due to the primer pockets.
Are the primers crimped? If not, reload at will. If they are, you'll have to deprime them and remove the crimp just like you would/should with crimped rifle brass.
I have run into 9mm military brass that has a crimp, i usually throw it in the scrap bucket, (mm is so abundant and cheap it isn't worth the effort i have to put into it to de-crimp it