DPA is good, but check out military summary channel if you get the chance. Good straight fwd map analysis and the guy is from Belarus so town pronunciation is correct….half the time with DPA I cannot understand what town he is talking about.
Please note that military summary is a bit of a homer (belarus after all) so the bulk of analysis is from the attacker perspective, but he does delve into what the defenders should think about doing to counter.
Another nice feature is that he uses both the west map as well as the russian map, and has recently started including google earth so you can see terrain features that come into play for attackers/defenders.
Thanks, wd. :)