This causes much confusion. This will clear it up. Defensive Troop buildings Best plunder of any attack building. Names: Barracks, War Cathedrals, Summoning Circles, Titans Lairs All Defensive Buildings Towers/Fortresses, Spy Defense Towers/Fortresses No Troops = NO PLUNDER AT ALL Names: Archer Tower, Cannon Tower, Lightning Tower, Spiked Fortress, Elemental Tower, Temple of Reckoning Scout Tower, Garrisoned Tower, All-Seeing Eye, Eye of Light, Fortress of Truth, Tower of Light, Temple of Clarity
I am not completely positive what you are talking about, but I think you are talking about striping someone of their allies. People usually strip you of your allies as a punishment or in a war.
They castle code does not exist and do not believe anyone who says it does. If someone says that it does write down their name and consider reporting what they did to a moderator. A one time offense will not get them banned, but after doing it once the developers will be watching them. Swabia was banned for this.