I usually try to keep one envelope of replacements for each troop type except line. Line, I may keep 4 or 5 envelopes. I will check each turn to see if any have dropped to zero and if so, I will replace the envelope.
However I am having a problem with the supply envelopes. Every turn, the supply envelope is used up and I have to replace it. And they are extremely expensive to replace.
Checking my supply units, they are all in the red. I assume they are constantly in the red as the supply is used up each turn.
I thought supply was suppose to be replaced by supply depots and lines rather than replacements.
So is the system working properly with supply replacements?? Am I suppose to have to buy supply envelopes every turn?