to answer your question regarding okw barrages. their indirect fire options are sorta null. that said, zeroing can be mentally good. get your Wehr pal to provide a sniper or a vehicle with a spotting scope and make sure your particle effects are turned down.
i want to say there was... i can't source any evidence, but i feel like each squad had a radio in contact with their platoon and thus the company with access to fire support.
as well, i'll say that i feel like allied intelligence, and therefore zeroing and fire support preparation would of been better.
with that said, by the closing of the falaise pocket and the extended campaigns, driving into berlin, the allied supply line was prettttty damn stretched from mulberry, the man made harbour and the cherbourg area.
when someone blames me ignorantly for something in a team game, and then retaliates/quits i like to imagine:
(╯°□°)╯︵ ┻━┻
in which i generally respond with "jesus christ, pick up your table..."