Her accent is defiantly British. She is with the Three Medical Regiment. And she has their “Recognition Flash” of the Royal Army Medical Corps. Maroon over Blue over Yellow, which is over/beside what Americans would call a combat patch or unit crest.

www.army.mod.uk/medical-services/29936.aspx

Professionally and just what I can see of her kit.

Far to many oral airways. If you have someone that has no gag reflex, their pretty boned, and a nasal airway works just as well. If they get better and get a gag reflex back, it is an outstanding way to ensure they die in their own vomit. You can’t ensure you’re always going to be next to your patient, or even able to help them if you are, in combat.

Reflective things, like watches, should face in to the body so they are less likely to draw enemy attention.

Cervical collars not only interfere with a persons airway, but have no medical benefit, and actually increase likelihood of death in penetrating trauma.

Pistol grip is WAY to far foreword on the weapon to provide effective stabilization, (unless she is only using it as a bi-pod, which that model can be), and increases likelyhood of a the well known shitty AR/M4/M16 platform to jam.

I would say her aid back is WAY to big and draws attention to the fact she is a medic, which considering there has been long standing bounties on medics in Iraq and Afghanistan is stupid, but she does mounted convoy operations per the youtube video, so that is less of an issue.