The scenario has its own time scale shown in the news window
Turns 1 to 4 = 1 week each
Turns 5 and 6 = 2 weeks each
Turns 7 to 56 = 1 month each
This reflects the change from manoeuver warfare to the static slugfest WW1 turned into.
On the West front this is the case , although the Entente managed to recapture Luxembourg in April 1915 albeit holding it shortly... the frontline has been going back and forth without a decisive breakthrough as yet.
Here's a shot taken on 4 September 1914 when the German offensive grinded to a halt.
I started the "race to the sea" quite early on... and you'll notice the French "I" units I used to set up fortified hexes behind the lines
