Uniform

When something is uniform, it has the same characteristics as all of the items possessing uniformity. If a group of things are uniformly blue, then you can assume that the blueness of them is all the same. There are not some items that are sky blue and some aquamarine blue and some deep Navy blue.

So also with the concept of clothing for our military services. That is pretty basic isn't it? We call the outfit a uniform because of its uniformity. All the people in uniform are dressed the same. If black shoes are required you don't get to wear brown cowboy boots.

What part of that didn't she get here:

Suffering Distress Without Her Hijab

You see, young lady, that the name of the organization of which you chose to become a member was Reserve Officer Training Corps. That means, even in the junior flavor, that the membership is in training to potentially become an officer in the United States military. If you were to follow through on the training you would be expected to be a leader, a role model, and a proper example for the people under your command to follow.

It isn't religious discrimination. It doesn't pick you out because of your faith. It is simply the requirement of the  profession.

So take the bloody thing off, wear the uniform proudly and march with the group. Or sit down, wear your hijab and STFU.