This can't be right

[Abydos]

There was no battle for my Dominion and it was heavily fortified. I sieged another players Dominion and it said I was tearing down the walls for about 5 turns then the Last turn the measage said that the wall was down an I could enter the fort. Then another message under it said I was vanquished which made no sense because my Dominion was well protected and I would assume it would at least show the battle of it being captured.