Location of Distinctive Unit Insignia on Class A ASU?

I cannot find if I should put the Distinctive Unit Insignia of my Class A ASU on the shoulders or on my beret. There seems to be some discrepency between the Dress Blue and the Class A ASU. I've been in the army for a while but never had a need to wear my uniform until now. So I am not 100% certain where to put this. Thanks.