To start out with, I have American version 1.1. I dont know if this bug has been reported yet, but when I go to AA tab in the production screen and order the production of AA guns, then place them after they are created, they do not appear on the province screen. When I created another AA, though, and go to place it and run my mouse over the province where I had placed the previous AA, it does appear. I was wondering if the AA which does not appear on the provincial screen still participates in combat? Either way, I hope this bug is addressed in the next patch