Is there a way to 'turn this situation to our advantage'? [=is there a way to exploit this situation?; is there a way to take advantage of this situation?]
The union should be 'at an advantage' [=should have an advantage] in the negotiations.
She used her position for personal 'advantage'. [=for personal gain; to help herself]
(..) the senate has the power. But Senator Gaius isn't influenced by that, of course. Where do you stand, General? Emperor or senate? The soldier has the advantage of being able to look his enemy in the eye, Senator. Well, with an army behind you, you could be extremely political. I warned you. (..)2000 Gladiator