*looks up from manga*

Huzzah! Someone's shown interest! :D

And I am certainly glad you are interested as you can tell ^_^. As for your questions.

*Either is fine with me, Wehrmacht or Waffen-SS
*Infantry is what I would consider the soldier being part of, and I do like the idea of a medic with little combat training. It would definitely prove interesting to see how they fare against the sniper
*1945 would be the exact year, since this is the Soviet Invasion of Berlin, around the time the Ivans are taking on the Krauts and making their way to the Reichstag. As for your character being patriotic about their country or pretty much assuming the worst. I leave that to you. ^_^
* Weapon-wise, yes I would say the Gewehr-43 could be used, but it would have irons instead of a scope. Also if the soldier is inexperienced at most, I don't think they could execute a perfect headshot under pressure. The Kar-98 I see no trouble with at all, the same could be said for SMGs like the MP-40 or the Sturmgewehr. However choosing an SMG, it would still be only a primary weapon, as I'm thinking of restricting secondary weapons to just pistols to make it more challenging.

Any more questions? ^_^ Feel free to ask. I want this to be as fun for you as it may be for me.