i've a doubt - after a fort battle is completed and the attack has failed, and you want to call another attack on the same fort, how long must you wait before calling the second attack on the same fort? - is it 24 hours or 48 hours?
towers will be completely built depending on the size of the fort. a level 1 tower will not have 9 spaces, ever. a 9 space tower appears when the tower reaches level 2. for max levels:
small fort - lvl 3
medium - lvl 4
large - lvl 5
Fort fighters will come naturally and join the side they are specced for because they care about fighting. Your town members will come because you are their leader and it's for their good to get a new fort. Allies will come if you ask them.
You also need to have a chat set up for the battle, because no one smart will be willing to die in an leaderless fort battle. To organize a large fort battle you will need good connections with other towns you can rely on, solid town members, a leader who knows what he is doing.
So,if I'll come to needed fort,but i won't be online at the beginning,my character will fight automatically?
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"Double your gun,double your fun"-by Me
It all depends on how you learn. The guide is excellent, but it might work better for some if read after 1 first battle try out. See what you did good/wrong and what you can do to improve after you know what he is talking about.