I've been playing for a few hours, and I've only gotten one of each. Is it possible to get more?
You can get one extra faction soldier from the first resistance faction that you contact by using a covert action that requires high influence in that faction.
With the WotC tutorial on you always encounter the Reaper faction first making it only possible to get an extra Reaper.
I read this in another thread that said that a dev had said it during a livestream and it seemed correct my first full run of the game so I believe it to be true but if you find proof otherwise, please tell me.
I was finally able to get another Reaper through a covert action. As far as I've seen, that's the only way to get new faction-units.
I'm almost finished with my first WotC run — which I really dragged out until November with a completely empty Avatar Project progress bar. I've got exactly four faction soldiers, the three initial ones from making contact and one additional Reaper from a covert op, I think it was simply called "Recruit Soldier". Since it was my first WotC run I did actually look out specifically at every turn for faction soldiers but alas, I got only the one extra.
I had two seemingly random faction missions, but those only allowed me to get more regular soldiers, so maybe that were just a new kind of regular new resistance mission types even though they were not introduced the same as the usual ones.
There might be an resistance order giving you Skirmishers. Unfortunately, I won't be able to figure out if these guys permanently join XCOM or just work in the mission for you as it is already deep in November and XCOM is really armed to the teeth already.
I have been playing the same game for quite awhile. I have everything researched and have done countless missions and have full influence with all the factions. All I have acquired is an extra reaper. So I truly believe it is only possible to get one extra soldier after the first three from other factions. If you find another way to recruit more please let me know.
The expansion originally only allows you to recruit one additional faction soldier from the faction you first start with.
You can remedy it by use of this mod: Recruit Multiple Heroes From All
The author has a number of other "mods" that are actually fixes to the game, which I, personally, recommend. For example he also has a fix for the "Brutal" ability of the Hunter. The fix makes it so every attack reduces the current will of your soldiers, instead of the maximum as it is in the original expansion at this moment.
If one of your faction guys gets captured you get a mission to replace him if you save the captured one now you have two