The 50 troop capture requirement seems almost moot, to me, since the bases are so hard. I was just up there. Had fun bombing a town and having a young kid try to shoot me down on the way back to base. But then I decided to attack a v- base. It seemed like it wasn't more than a couple minutes after I deacked and hit the radar and some barracks that everything was back up again. Didn't seem like much point in continuing.
So, seeing the kid that tried to shoot me down earlier had switched to Axis, and was going on a bomb run somewhere, I decided to switch to Allies and go shoot him down. Problem was, once on the Allied side, the radar didn't seem to be working so I didn't know where he'd went, and all the bases stopped flashing.
I think friendly radar isn't working right as I didn't see on red dot the whole time I was up, even when I was being attacked.