How to import Unreal animations to Unity?

I have been developing games on the Unity Engine for 4 years but the one aspect of gaming that I don't know and generally try to avoid is animations. I am currently making a multiplayer first person shooter, and I need soldier animations. I have searched multiple places for over 3 months but have not found a single solution that is free, qualitative, and includes all of the animations I need. Just yesterday I found that Unreal has several free FPS soldier animations. Is it possible to import these animations to Unity. If there are any alternatives I would be glad to know.

(PS I don't mean weapon animations, but the animations of the actually character)

Thank you