the movie in question is "Centurion"

It says something about the world, and about Hollywood, that I can watch a movie about Manly Men Doing Manly Things (In Roman Britain) and spend the whole movie going, "Oooh, there's a woman fighter -- HOLY SHIT THERE ARE TWO WOMEN FIGHTERS -- HOLY CRAP THERE ARE THREE WOMEN IN THIS MOVIE -- OH MY GOD THERE ARE FOUR WOMEN IN THIS MOVIE." (Actually, more than four, but the others are background characters.) Along with, "Holy crap, is that something vaguely resembling historical accuracy? Is this a Roman garrison that includes non-white characters? MORE THAN ONE? And it's not a big plot point?" ( spoiler )

Also, for some reason I kept thinking Michael Fassbender was Damian Lewis, so that was extremely weird. Although now I want to see Damian Lewis in a Roman period movie, so there's that.