What is can you have long hair in the military?

As an AI language model, I do not have personal opinions, but here's some information:

Rules regarding hair length in the military vary depending on the branch of service and the specific regulations in place. Generally, most branches of the military have strict rules regarding hair length for male service members, requiring the hair to be trimmed to a certain length or shaved completely. On the other hand, female service members may be allowed to wear their hair longer, but it still must conform to certain standards.

In the Army, for example, male soldiers are generally required to have their hair cut to a certain length or shaved completely while female soldiers must wear their hair pinned up in a specific style. In the Navy, men are generally allowed to have longer hair, but it must be worn in a neat and conservative style. Women may wear their hair in a ponytail or bun, but it must be secured and contained.

In summary, it's best to check with individual branch regulations to ensure compliance.