Totally vanilla.
The first ambush, The "Third Attempted Abduction", was 1 crossbow, 3 bowmen and 4 wrestlers. My champions were awful shots at the time and half of them had turned up with -turtle bone bolts(5)-. So we beat them to death with +steel crossbows+.
The second, the "Abduction of Celor(?) McBaby", saw a small squad of axegoblins and wrestlers getting shot to death in the open to the east (bonus points to the miner who revealed them. Took some goblins' leg off with his pick and then ran for it.), while a slightly larger squad of bowgoblins and wrestlers infiltrated close enough to get ripped apart by traps, crossbow fire, and caravan guards.
The first siege, The "Ferocious Assault", was about 12 mixed wrestlers and spear, pike goblins. We had plenty of time to get ready. It was a massacre.
the second; the "Fell siege", was a dozen wrestlers and lashers led by a hammer lord from the south, the same number of wrestlers and swordsmen led by a swordmaster from the east, and a spearmen/wrestler squad led by a swordmaster (or maybe just swordgoblin?) from the west. I didn't know about the last two groups, and the second group got right to my door before traps took out the swordmaster (well, actually, my axedwarf took out the swordmaster. But I'm pretty sure 4 stone-fall traps didn't hurt) and an axedwarf and sword-wielding hammerdwarf (it simplifies sparring) harried the rest off the field. The lasher/wrestler group got annihilated by crossbow fire, although the hammer lord escaped. The spear/wrestler group turned up late, and broke as soon as we started shooting. The axedwarf and hammerdwarf chased them away and caught about four of them.