The teacher's union has found an unlikely 'ally' in the company. [=the company supports the position that the union has taken and this was not expected]
He'll even admit that he's hoping to 'ally' himself 'to' a wealthy family by marriage.
countries 'allying' themselves 'with' the EU
(..) Go! Get out of that water! Roll! Right there! Roll! Pain is your friend, your ally! It will tell you when you are seriously injured! It will keep you awake and angry... and remind you to finish (..)1997 G.I. Jane