Complex sentence: Georges requested that the Seventh Army be replaced by two divisions and returned to the General Reserve and warned against sending the bulk of the French mobile forces against an attack on the northern flank that was a diversion for a German attack through the centre.
Split into simpler sentences: Georges requested that the Seventh Army be replaced by two divisions and returned to the General Reserve. Georges warned against sending the bulk of the French mobile forces against an attack on the northern flank that was a diversion for a German attack through the centre.