How many times in any game, was your team "retreating" from the enemy en masse?... Generally there is a spawn then you run to the enemy...
Or a "Take no prisoners" Megadeth, or a "War Ensemble" by Slayer.for instance a "Blitzkrieg" by Metallica..
I'd have to say no to the server sounds.
Ever tried almost any game on Source? Almost every server has their own sound, and it ranges from lightly appropriate music to the Chicken Dance song, certainly not the stuff you want to hear in a WW2 combat game, at least if you approach it at least somewhat seriously.
I'd chew my own ears off if i could reach them if that would ever happen.
Yea, but there are respawns, in the likely event that you die anyway, you will just respawn and run towards the enemy again. It wouldn't have any purpose...