Bay 12 Games Forum

Try and find out, don't forget to tell us how this experiment goes. 

Dodok is travelling through the rosy hills looking for the lair of one this worlds last dragons. Being ambushed by goblins every two steps is taking its toll on his companions. Luckily he didn't recruit them indiscriminately so one particularly muscular human lasher now has 9 kills to his name and earned a title. Nevertheless the starting party of 7 has been decimated down to 5 and whether they will make it to the lair still remains uncertain. While travelling the party discovered the source of the goblin infestation in the form of a dark fortress (if only they could waltz in there and rid that civilization from the map once and for all).

I also had this problem, i had a 4x4 (floors) crossbowtower, it should have been possible to fit 10 dwarfs up there, but i only had 4 and when they stand on the wrong side to hit something its rather annoying.
If you train them up to legendary they will have no problem to shoot through the fortification at least.

The wiki says you are wrong (it lists iron > bronze for 3.18), but some small testing in arena mode showed that bronze and iron are pretty much equal.

If your fortress did anything of importance (killing some fb, megabeasts) you can ask humans for surroundings enough and they will rather sooner come up with the name of your fort and a story about how a cyclops was killed there.
Alternatively you can start a new dwarf mode game and select (R)eclaim to locate your fort, then remember the location (easier the smaller the world is). You could also export a map from legends mode. Or just keep starting new adventurers until one starts close to the fort (that's what i usually do).
Keep in mind that the demons will probably still be there, so you might want to train your adventurer first 

Start by creating a burrow and define it, name it something like "inside". Add every part of your fort to it. You can designate in 3d, so to add your main staircase just go to its top and the topleft of that then go down to the bottom and press enter again on its lower right. Once you have all of your forts inside blinking, go to the military screen (m). There go to alerts (a). Select an alert (active/training is fine) with up/down and go to the right were it says burrows. Press enter on your inside burrow. There should now be an 'A' next to it, meaning civilians will be restricted to that burrow when the alert is set to civilian alert. Now whenever you are under attack go to alerts and press enter on the active/training alert a *civ* should show up to the left of it. This will cause any civilian to drop all jobs that require them to leave your fort. Once the outside is safe go to alerts and press enter on the inactive alert the *civ* will move there and your civilians are free to go where they want again.

Train up an army of legendary siege operators on catapults.