Isonzo

Open up a game full of bots on a pretty wide map. I found Caporetto to be quite easy. Start as the attacker and destroy the first enemy forward post as a part of the first push into enemy territory. Get a headstart over the bots to be first on the post, but don't go too fast so the bots can give you cover (although they suck at this job). When this is done, observe the bots: They usually (but not always) have a preference on where to go. In my case, most of them went over their left flank, leaving their right flank alone. Now switch teams. The bots on the attack team mostly went to their left side, so I chose their right spawn point as a good target. Go to the post and observe again: often bots come in waves. Wait in cover for the next wave and when it's gone, attack the post. When succesful, go to the next spawn point and try again or retreat a bit and wait for them to rebuild the one recently destroyed.
Tip: The engineer is faster at destroying stuff than other roles and with the Engineer company perk (obtainable at level 18) even faster.