In 1v1, just shoot the wall with a single window with sturms and volks - that's the only realistic option without wasting manpower/resorting to doctrines.
In team games have the OST get mortars and pio flamers.
Also don't try too hard to break the mg nests in ettelbruck before stuka. Just wire up northern area and force the fights out of mg range. Once stukas are out, all buildings will collapse in a single volley.
If its something like 4 OKW...good luck, because both WFA factions are limited in indirect fire.
And contrary to what some people claim, don't get AA halftrack for anti-garrison purposes...
Yeah i dont even seriously consider what some people writes anymore. Even in this thread, some people already made incorrect assumptions to promote allied factions. Some people can even be called allied vetlolcake. To actual posts, i actually like the idea of giving volks flamers and moving shreks to pio's, two birds with one stone.