The issue with this is, in the court of public opinion, once it's proven that your "alibi" doesn't hold water, you aren't allowed to come with an alternative "alibi", but rather perceived as a liar; otherwise you would tell the truth from the beginning.
West. Basic training. https://www.todaysmilitary.com/careers-benefits/careers/publ...
East. The "Тактика" и "Военная подготовка" part. This is an example of russian uni that trains military journalists specifically, still during my time in my military dept (not military uni, just a dept) in uni "Военная подготовка" went above and beyond shooting on a range and ruck marches. https://voronezh.postupi.online/vuz/vgu/programma/10008/
European countries mostly pick fresh recruits after basic, and do additional training, then they assigned a role.
Combat medics, for example, that are by Geneva convention are non-combatants are still trained to use rifles and carry at least a pistol, in most militaries, for personal protection during active service.