So here's a progress report from the fortress of Lancedweakened:
Most importantly, I have the training spears linked up to a minecart repeater and have had them going for some time. Most of the trainees are dabbling or novice in most related skills. None are actively dodging yet.
I have breeding pairs of wild capybara people and dingo people, and have setup chains at the end of a very long corridor filled with cage traps to trap their offspring in. Still working on obtaining a breeding pair of the significantly more hostile troglodytes.
The corpse processing facility just fulfilled its first bulk order of reanimated body bits. about 60 assorted arms, legs, whole bodies, and so on were brought back to unlife in this first run.
I figured out why dwarves kept wandering into the kiddies' danger room. This wasn't an issue at first, but then they started having babies and babies are soft and naked and soft naked babies tend to get perforated by pretty much anything vaguely pointy so in other words the childcare was full of dead babies for a bit. Anyway, the reason mothers were bringing their babies into a location where they were certainly going to be bludgeoned to death in their mothers' arms is that they wanted to eat lunch. The mothers that is. The mothers were getting their babies murdered in order to eat lunch in the unoccupied dining rooms in the kids' area. Some other mothers got their babies murdered trying to retrieve socks and seeds and such dropped by other mothers. It was just a bad situation for the babies all-round.
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Anyway, forbidding all the unused furniture fixed that.
I have a very basic sort of live training room under construction, just a 5*5 featherwood bridge that retracts 1z above a featherwood floor covered in cage traps. It's near the barracks so if there is some sort of horrific malfunction (like a megabeast preventing the bridge from retracting or something) the military can step in and mop up the mess.
Finally, I'm contemplating giving the kiddies access to the aboveground farms and harvest stockpiles in order to prevent cave adaptation and train them in a useful (albeit civilian) skill. Thoughts, opinions? The childcare was built one level below the surface for convenient aquifer access and control of the water for filling the kiddy pools so it's not like they'd have to go far, and I can always reconfigure the surface fort to bring the farms closer to the childcare entrance.