The reverse problem: In my current fortress I had an immigrant wave arrive in the first SUMMER.
The problem was that a group of fire imps were squarely between their arrival point and my fortress. Thank god I didn't have a meeting area designated, so they didn't walk right through the Fimps. I drafted them all and marched them to the fortress by an indirect way.
Problem, two children weren't able to be drafted, and remained at the edge of the map with fire imps getting closer. Also, one of the migrants was a woodcutter; and when I drafted him I forgot to set him to keep his axe, so he left it behind.
Result, as soon as I undraft them, they all run back outside, back torwards the imps.
I wind up drafting my 3 miners, my woodcutter and my armourer (who was holding an axe at the time) from the original seven and set them at the imps. The running fight went back and forth across the tundra as the Fimps chased random dwarves and my founders chased them.
Result, 4 dead fire imps; and eventually some funky bones in the stockpile. I think they eventually made 3 crossbows and a set of leggings.
We lose a peasant, a (migrant) woodcutter, a child, and a dog. More seriously, my armourer broke his arm and died of thirst before he could recover. My 2nd miner/expedition leader proved tough enough to recover from multiple injuries, only to die in a shocking own-goal by me that winter.
The dead child's clothing was never reclaimed, and as of six years later grows more and more threadbare on the haunted snow. All except the cloak, which was stolen by a raccoon last week.