Hi hveldenz
"tell me the amount of AA per company or battalion attachment?"
Very little usually none,
Check out
http://orbat.com/site/ww2/drleo/
and
http://www.bayonetstrength.150m.com/...l/site_map.htm
But Generally
For infantry most Battalions were happy with an AA MG or two. The 50 cal for instance is actually issued to infantry as an AA asset. Once dug in infantry is pretty much immune to air anyway. Vehicles are a very different matter. Tanks in particular are expensive and so you begin to see much more AA in armoured formations. But again for armies with air superiority ie late war American and British for instance AA would be a very low priority just the opposite for the Germans of course.
A lot of AA will be allocated to the rear area anyway, in particular bridges, HQs, supply dumps, supply lines, airfields etc. So divisional and corps level AA assets may not appear at the front line but will be used to defend divisional or Corps type assets.
Best Regards Chuck.