imo fortresses are 2 types-large and small(i say again l2.com is smarter me) so on the map u know they are like shield with "!" sign inside them and u just go rush it pwn all inside and its your! atm in europe is night so maybe tomorrow there will be more replyes... i think i cant help u much more in fortresses
sry
ive found this:Rewards
When a clan succeeds at taking over a fortress, that clan earns 100 Clan Reputation Points. Losing ownership of a fortress does not result in any loss of Clan Reputation Points.
Once a clan claims a fortress, the clan’s Reputation Level will increase every six hours. Also the “Blood Oath” can be obtained from the Logistics Officer NPC.
During a fortress siege, a Knight’s Epaulette can be obtained from a Defender NPC or a Commander NPC.
If “Blood Alliance", “Blood Oath”, or “Knights Epaulette” are taken to Clan Merchants, such as “Ilia” and “Hulia”, they can be traded for a certain amount of clan reputation points.
Residential Skill
A fortress owner obtains residential skills automatically.
Upon winning a fortress, two residential skills are automatically acquired, and for the Western Fortress a total of three residential skills can be obtained.
When a clan loses a fortress, the acquired residential skills will disappear.
