Then the photo and description of the artillery of the 1st Cossack Division is what you need.
Unfortunately, I have no information about the Cossack armored vehicles. But judging by the wording of the sources - were attached to it, the German units.
In general, this division had mostly standard German weapons and field uniforms (with Cossack symbols and partly using traditional headgear). Parade uniforms sometimes, especially among officers, had a Cossack sample.