This isn't so much a facepalm on my part as it is just laughing at the stupidity of the way seiges sometimes go...
I was largely bored, not having any seiges because the goblins apparently decided to call off their war with me, but still chugging through because I was trying to get my major waterworks project done, plus finish all my absurd security measures to protect my dwarves from threats that don't appear.
Then I got the goblin seige that showed up that I talked about in the "gradual rise in difficulty" thread - only one goblin was a threat, the elite marksman who taught me that highly trained marksmen are completely immune to fortifications, and only stopped slaying dwarves because he ran out of ammo. He was also the only goblin who actually managed to reach my gates (and promptly got caught in my very outer cage trap), while every other goblin just turned and fled.
OK, lessons learned, I'm two dwarves down, (and that makes 8 dwarves total, including the unfortunate accidents, I try to run a fairly safe fort) but ready for the next wave!
It shows up: This time, they are led by legendaries, goblin local leaders, all three squads! Umm... wait, what's this? One of them's MISSING BOTH LEGS? His socks and boots fly off as soon as he appears, and he pretty much promptly falls unconscious from the pain. The goblin invasion stops because they don't know how to do anything but follow the leader.
Then the last living fire imp who is missing an arm because of picking too many fights with wandering unicorns regains consciousness long enough to chuck a fireball at them, and torches the whole squad.
VILE FORCES OF DARKNESS, BABY! Slaughtered by random wildlife that is bleeding out! OH YEAH!
----
This, however, was only one squad.
The other squads (which had marksmen in them) came as per normal. Now, because the dwarven caravan had come, I had marked some nearby narrow leather crap for trading. When the gobbos came, I forbid them going outside. So my dwarves would try to go outside to pick stuff up, then realize they were outside, and turned around... then went to try to pick it back up.
Because "outside" would be in shooting range, I decided to forbid that crap. They wouldn't pick up forbidden things, right? HAHA! NOPE! That just means that they'll keep trying to go there, AND when I marked that stuff off the list in the trade depot, they STILL went for it.
So, I unforbid the stuff, THEN mark it off the trade depot, and FINALLY, it works... only, my dwarves ARE STILL GOING FOR THE CRAP! They are listed as having "No Job", but they won't go back until they stand over the crap that they aren't even going to pick up. Activating and deactivating them in the military does nothing. The gobbos are getting close, so I activate the dwarves in the military, and station them back inside my base. HAHA! TOO LATE, SUCKER! They decide that as newly recruited army dwarves, the best thing they can do is make a headlong suicidal charge at a dozen goblin marksmen.
FFFFFFFFFFFFFFFFFFUUUUUUUUUUU-