Countries strictly using only their weapons

So, this has bothered me for awhile now and the friends that I play with agree that it is as well. When you’re playing as a British soldier and you’re fighting against the Germans, I really don’t want to get killed by German with an Arisaka rifle, a lunge mine, M1 Grande, etc. etc. My main problem is I hate being killed by guns that the opposing team should not have at their disposal or it’s not possible for them to have weapons that don’t belong to their own country. This main problem is that I strongly dislike the fact that any player is able to use any gun they choose to fight with in a game. I want diversity in game modes. I want players to use weapons that are from their own countries. I think this will make players have to try new weapons instead of just relying on using snipers or shot guns, etc. I can understand that a lot of the basic weapons that you start off with when you first get the game are your basic German, British, Danish, Swiss and Italian weaponry and that’s totally fine. A lot of the time, especially for Germany, weapons were confiscated and or picked up by soldiers who either won a battle or took over a city, so on and so forth. What I’m getting at, it’s not realistic to have a German or Brit to carry a Type 2A in the European Theatre of War or a Japanese soldier to be carrying an M1 Carbine and a Bazooka.