[Marcello]

Another small issue I just noticed.

Unit n. 151 15cm Batterie has a ROF value of 4
Unit n. 735 15cm Howitzer has a ROF value of 5

Both use the same weapon n.79 15cm sFH 18

Cautiosly I would suggest Unit n. 151 ROF to be raised to 5.

Artillery weapon in the 150mm range get 4 or 5 ROF in the game.
Guns using metallic cartridges and sliding breechblocks typically and reasonably get 5, while interrupted screw bagged charges types get 4, again rather reasonably.
The 15cm sFH 18 falls in the "metallic cartridges and sliding breechblocks" camp; to be sure ROF is listed as 4 RPM in the sources and german WW2 field artillery designs were rather unremarkable but still 5 seems more consistent.