as prev stated... war is war, regardless of 'where' it occurs - that's why I think Faction fighting should occur in tram on enabled shards, with NO call guards on other faction members. REGARDLESS... Numerous wars, globally, have found real brothers on opposite sides. I think of Guild like Family, just as brothers are, and sometimes, for various reasons, they end up on opposite sides (faction). It should be allowed in UO. As a measure of checks and balances, there should be limitations to this - you don't get anything extra for killing your guild mate, looting rights is all. NOT just a Siege issue, I quote a typical example of why the current rule is wrong.