DLC swag for marrying second gen: 1x Boo Camp. Because Birthright sucks, you get better experience from this than progressing through the story.
*Kiyomi - Lucky/Slow Bow Knight (via Outlaw talent); ended at 20/19; married Asugi. Picked a random Japanese name. Managed to get Lck-screwed but still managed to cap eventually. Slow is a nasty bane but at least Bow Knight made up for it. Movement+1 and Boots are great to have in one place; she could easily reach Garon at melee range in Endgame. I would have posted this sooner but she whiffed the enormous hulking dragon at 93% and got killed on Enemy Phase the first time I tried.
*Azura - Mechanist; ended at 21/18; married undrafted Saizo. Azura is pretty much always held back by crappy weapon ranks, which is a shame because she's a crit machine. Replicate is awesome.
*Silas - Kinshi Knight; ended at 19/19; married Mozu. Silas might be the best unit in both routes, and I'm getting tired of seeing him. He's kind of wasted as a Kinshi Knight (as is a lot of people) but keeping B Lances is pretty awesome.
*Hinoka - Kinshi Knight; ended 15/18; married Kaden. Hinoka is the only person who may challenge Silas for best unit in Birthright, but she's also kind of wasted as a Kinshi Knight. Got absurdly blessed in this run, but still wound up 6 Str behind Silas. *tear, tear*
*Setsuna - Master of Arms, ended 10/12, married undrafted Ryoma. I wasn't going to deal with this crap again. I used her as little as I could, made her queen of Hoshido, and then used her as a backpack for the rest of the game.
*Hayato - Mechanist, ended 10/18, married undrafted Orochi. It turns out that physical Hayato is never good. Magic Hayato was starting to approach good (with Orochi as a backpack, so keep that in mind) but I didn't get a chance to find out. I pounded experience into him so he could pass Replicate, and then he basically hung out for the rest of the game. Replicate was awesome anyway.
*Mozu - Kinshi Knight, ended 16/20, married Silas. She got to A Bows, so she got to play with Spy's Yumi for the last few Chapters. Fairly standard Mozu, except for how she adamantly refused to gain Str (she wound up 6 points under her average).
*Kaden - Basara, ended 14/20, married Hinoka. I promoted him near-instantly and only left him as a fox long enough to get Even Better. He's pretty much always going to suck at magic, and wound up being super-mediocre throughout.
*Sophie - Paladin, ended 20/18, Mozu's daughter, married Shiro IIRC, inherited Aptitude and Luna. She's actually kind of good, especially on offense. I'm not sure why I never seem to use her. She was the only primary sword-user other than Corrin, so she got to play with the Wakizashi and a forged Venge Katana.
*Selkie - Basara, ended 20/19, Hinoka's daughter, inherited Even Better and Camaraderie, married Shigure. It turns out that you can make magic foxes mighty if you dump two Spirit Dusts on them (up to 17+2 Mag at endgame) and give them the best mother ever. Horse Spirit and the two healing skills she inherited made her virtually indestructible. She hit B Tomes but honestly nothing was better than Horse except maybe Gate.
*Asugi - Mechanist, ended 20/19, Azura's son, inherited Voice of Peace, married Corrin. Bad Def and HP, good everything else. Replicate is awesome. Of the Mechanists, he was the only one to start with either weapon rank, so he wound up getting the good shurikens and ultimately wound up chipping with Spy's Shuriken. That thing (with its huge debuffs and Poison Strike) is insane. On a similar note, Replicate is awesome.
*Shigure - Mechanist, ended 20/19, Saizo's son, inherited Voice of Peace, married Selkie. Super-buff and does everything well. Managed to get to B Bows, so his smug face got to show up in a lot of combat. Replicate is awesome.
*Shiro - Spear Master, ended 20/18, Setsuna's son, inherited Quick Draw and Vantage, married Sophie IIRC. Shiro is honestly kind of mediocre and Setsuna is a crappy mother (he even got Spd-screwed!), but he held up well and his utility went way up in the last few Chapters when he picked up the Waterwheel. That weapon is sickeningly good.
*Rhajat - Blacksmith, ended 20/19, Orochi's daughter, inherited Replicate, tried to marry Kana (I clearly hate Kana). I went to so much trouble to get her, and she still got screwed at everything. Still, a Chapter of axe-whacking and an Arms Scroll later, she did exactly what I hoped - hold the Bolt Axe and crush all who opposed her. D Swords also let her hold the Sunrise Katana if she ever had a need to survive Enemy Phases. Did I mention Replicate is awesome? Because I can think of one thing that's better than a vindictive witch who uses her thor-hammer to one-round Generals...
*Kana - Mechanist, ended 20/18, Asugi's son; inherited Voice of Peace and Movement+1. Took his sweet time getting born, but having an 8-Mov Mechanist is legitimately awesome. He did more Mechanist things and wasn't bad at them. Replicate is awesome.
In case you weren't counting, that's 15 units that expands to 21 units. Normally I have to do Ch. 27 by dealing with one or two groups of enemies at a time, but in this run I just killed the entire bottom half of the map by the end of Turn 2.