Just recently i created a fort with the intention of allowing only a single dwarf to do all the work, and it was going quite well, at least until the dwarves i were forcing to stay outside got hungry, then began to starve; apparently, if they cannot find their way to food, the food becomes inaccessable to
everyone. It basically ceases to exist from the Overview (Z) and thus ceases to exist from the minds of every dwarf that can access food.
Fortunetly the way to prevent this is to create a meal in the kitchen; those food items (along with drinks and seeds) can never become "lost" or at least, it certainly seems to be that way.
Wether or not the dwarves are or are not military may matter, but i didn't have time to test it...
The second bug is a crash bug (this is the +1) I had qued a door removal (which was between two first-level of engraving (smooth) walls) and had the first metalsmith stuck outside; attempting to starve him to death -- the caravan had also arrived moments later. Anyways, starvation hit and the metalsmith started to look for food, but AGAIN caused the above bug (the only entrace to the fort and thus food store was barred; the smith was still active for military duty) of food-disappearance (even though there were 20 plump helmets in barrels in the food store)
Then the single dwarf that had the door-removal qued finally got around to doing the job, and just moments (like seconds) after the door turned to the door plan (looks like you cut a + in half down the middle and pulled it apart a bit) image, the game crashed.
And as a side note (this is the +0.5 )
I find it VERY weird that a dwarf which is On Break can be forced back to work by switching the dwarf to active military service, and then a few seconds of active game time passes, and switched back to a civilian, the dwarf will no longer be on their break; and thus will return to work. This exact same EXPLOIT* can be used to break up parties... Practically every job that isn't hunger, sleep, or drink related can be "Erased" in this fassion.
* If dwarves were ment to be forced back to work, there'd be a button for it! BTW, can we have that button? At a cost to dwarves' happyness of course.