[quote=@Yam I Am]
<Snipped quote by Andreyich>

Yeah, I intended it to be more a case of the former in terms of tactics. I had intended it to be based more off of the role of the Landsknecht in Late Medieval Switzerland and some of the German states of the time, in that the greatsword users of the time often fought in tandem with arquebus and pike formations, specifically in that the user of the greatsword were intended to counter the use of other pike formations. My question more was intended to see if this would fit more in with the Legionary role of Hastati or it would be more fitting to list Kara's role as that of Auxilia. 
[/quote]

Now I understand. Ultimately both are viable. An auxilia has arguably more operational and tactical freedoms, although harsher reprimands should those freedoms be broken; a hastati would have another lane of progression in promotion where for an auxiliary institutional progression is mostly just a little more pay, with the potential of being eventually turned to an advisory role (though this is likely out of scope for the RP). 

Tl;dr it depends on your preference: go with auxilia if you want to highlight her Nordic brutishness or be a hastatii if you want her to have more come to terms with the Empire and a stable life.