In the original release of D2:ED there were generators in the flying fortresses, which you needed to destroy to take down anti-dragon shields. However, in DKS they were mostly all removed; the only one left is in Stone's fortress, in the fortification with Xanlosch and Isabelle.
BTW, if you edit your post in the D2:ED forum, there is a 'delete post' button beside the 'Change Post' and preview buttons, which will remove the topic, as well (as long as nobody replies to it).