There was this question some time ago on an online forum revolving around the British Army and it's history, believe it or not this question was asked as a response to some crazy person on Twitter or something complaining about the lack of depiction of fighting women on the western front during the First World War. The general consensus was that while women did attempt to disguise themselves as men to fight on the front lines most of them were obviously found out after physical examination, I mean hey, if they're checking to see if you're flatfooted and exempt via The Military Service Act they would obviously notice some other things a miss... get it? Considering it was a time where group showers were a thing, toilets being less than private or luxurious and men slept, ate and performed physical exercise together the odds of a women sneaking through to the trenches and fighting for a long period of time incognito is at least in my opinion quite absurd. I admit some of them may of managed to get to the front line however they would've been found out in a short amount of time. I've spoken to a few friends and colleagues of mine who take a great interest in history, specifically military history and some of them believe it to have been impossible for a sizable amount of women to fight alongside men for a considerable amount of time in that environment. Unless ofcourse they were called Bob.