I have 7 questions!

[homer82]

Another use for German regiments is as 'spine stiffeners' for Romanian and Italian divisions down south. Romanians and Italians tend to rout out rather easily. Put a German regiment in with them and they do much better.

[malyhin1517]

I'm sorry but this is wrong.

When units or freight entrains it takes its 'trains' from up to 30 hexes. In the early game as you advance, most freight moves are NSS-depot so the only railyards that matter are within 30 hexes of a NSS (for the Axis most places west of Warsaw).

Now later on you get depot-depot rail moves and then, yes, you need more spread out railyard 2 to sustain this (but actually not many as the moves are limited, even if you use the trick of letting say Minsk build up at level 4 and then empty it).

So by the time a railyard is needed for depot-depot freight moves, the front will have moved on (I'm talking the early stages of 1941 here) and it will have repaired by itself. So yes, connect them but no need to waste construction units or Admin pts on priority repairs

Unfortunately, I am writing this from my own experience. Previously, I also did not do priority repair of railway stations, but then I became convinced that automatic repairs were too long to wait!