There they are, but I don't know what they are. I do know that they are individually featured behind the rear wheel and on the hood, as you can see.
And for the signature, that's just regular Brush Script MT, Brush Script STD, or BrushScrD (those are the three fonts I have to make signatures like that.)
I'LL UPDATE THIS LIST BELOW AS I FIND THEM (they are National Guard division logos):
197th Field Artillery Brigade
128th Military Police Company
2-138th Field Artillery Brigade
38th Infantry Division
32nd Infantry Brigade
39th Infantry Brigade
50th Armored Division