Before the Japan patch the 80% army professionalism bonus was -50% general cost, 100% bonus was half morale damage to back line reserves in battle.
After Japan patch these two bonuses are switched, but now morale damage to reserves are doubled.
I still like the pre Japan patch better because really, as a human player you really should not be taking morale damage to your reserves if you micro'ed your armies well. I much rather have the half general cost at 80% so I can keep spamming general to bring up my professionalism and use slacken recruit for men power. It's already so hard to keep up with army professionalism as a large nation as is.
After Japan patch these two bonuses are switched, but now morale damage to reserves are doubled.
I still like the pre Japan patch better because really, as a human player you really should not be taking morale damage to your reserves if you micro'ed your armies well. I much rather have the half general cost at 80% so I can keep spamming general to bring up my professionalism and use slacken recruit for men power. It's already so hard to keep up with army professionalism as a large nation as is.