On episode 2, they already used “repeat” instead of “say again” on the radio which means to call for another artillery barrage, whatever I can let that go, but then they refer to the grounds guy as a Corporal but his uniform has a First Sergeant rank insignia. This stuff isn’t hard to get correct, spend 5 minutes on the internet and you can find army rank structure and proper radio etiquette. Great concept for a series, just poor execution.
