Combat

Aka, make him a dread fighter if you're willing to spend the money.

Which I did not. I just read somewhere that he is a good candidate. 

I never tried him as a Dread Fighter, actually, but I did try both Vanguard & Ballistician.

Both ended up pretty slow, but damn did he kick ass, especially early on.

I usually use Dwyer as healer. cuz you know... butler.outside of that Rhajat tends to be a second healer and I tend to train corrin as healer later on. still better use of time then using him as dragon stone wielder