**All your bases are belong to us**

Attacks will have to be carried out based on known locations. The clans could pore over the map of their city, and check individual houses. Finding a residence that looks unoccupied, they can then question the locals about why it is empty. If it's not empty, then they've found a suspected location to nuke. 

This may however lead to a lot of collateral due to false positives, or the other clan member may just not be home. 

The attacker holds the advantage in this scenario though, as the base is known but not where the attack is coming from. This will lead to a long drawn out battle where each clans places of residence and bases of operations are slowly taken out.