Hi!
After having heard a lot on the forums and in the wiki about them, I finally managed to get the goblins to lay siege to my fortress in the spring of 1057.
Because oversized farming has been draining my workforce constantly, my fortress wasn't really as prepared as I would have liked it to be and so I was worried that they would swarm over my traps and slaughter my civilian dwarves... But things ended up comepletely differently.
http://mkv25.net/dfma/map-563-claspglides
above is an image from 1054, but the fortress hasn't grown much; a little bit of workshop space west of the cave river and a single-tile tunnel straight to the chasm because I tried to save a moody dwarf.
As for the defenses, the weapon traps in the main entrance area were 4 layers deep and the decoy room south of it was completely filled with stonefall traps. The 5x5 room in the entrance area with the well is my barracks.
So, after being alerted to the siege, I checked and there were about 15 goblins of various professions, including crossbowmen near the NW corner of the map. None of the nasties the wiki mentioned like beak dogs or trolls. I quickly recruited all dwarves that were outside and stationed them in the barracks, closed the inner door of the barracks and ordered dwarves to stay inside. When all dwarves and cats were inside the fortress proper, I opened the inner door of the barracks and in turn closed the outer door.
I checked on the goblins, and they were still regrouping in that corner. So, I ordered some reserve crossbows to be made and a practice target to be placed in the barracks.
I checked on the goblins again. They were still in that corner. With a bad feeling, I unlocked the outer door of the barracks. Returning to the goblins, I saw that they finally started moving. Those cheating bastards! How could they know whether the door was locked or not?
Anyhow, when they arrived at the entrance area, only one of the four recruits/markdwarves I had stationed there was ready for action. The goblins moved past the wagon, which I had all forgotten about without even giving it a second look. When they were only a few tiles away from the outer channel, I locked the door again to prevent any plundering dwarves to march into the reach of those crossbow goblins.
One goblin walked into the first weapon trap and his limbs were sent flying. Another one walked into a weapon trap right next to it, first fell unconscious and then died there. Then another two joined them, not even getting past the first layer of weapon traps. As the fourth goblin was reduced to a bunch of '2's, the *SIEGE* highlight disappeared and the surviving goblins ran away.
So, my markdwarves didn't even get a chance to practice on some live targets.
I only got to loot four goblins (still should make the human merchants happy).
With all the body parts rotting there, the entrance area became miasma paradise for months.
On the positive side, no dwarves or cats got hurt during the incident.
Ah, and there was no Elven caravan that year, because the goblins took so long.
All in all, I find this rather disappointing. I would have expected them to be more pushy, creative, or threatening... They didn't even look at the decoy room. And they didn't try to jam the weapon traps (which I was most afraid of, because there were only 4 complete layers).
Deathworks