I went back through some PBEM turns.
call to arms 1914
Sep 5 1914 Ent turn.
In the replay there was a French II Calvery unit where the red circle is NW of Riems 221,56 that I did not put there. This was between the French and German lines and it did not last very long.
I am pretty sure this happened again with a corps NE of Riems 223,56 but I can not seem to find the replay of that.
Hope that helps, I will keep my eyes open for any more.
Really enjoying the game.
-Bill