France 14, Race to the sea and forts

[Volcano Man]

Yes, both are correct.

As ComradeP says, smoe of the larger forts have supply sources, mainly to prevent isolation, but if supply deteriorates during the campaign, then this may be reduced to 0 (which is intentional to represent an overall degradation/depletion of supplies). So, where-as a fort might have provided supply at the start of a campaign, it may not always provide it later.

Please refer to the Supply Variations while playing the scenario.