On the eve of the Battle of Mons the British Expeditionary Force were preparing defensive positions in the area of Mons. To the east were I Corps, with II Corps along the Conde - Mons canal and around the town of Mons in a salient on the Central Canal.
To their north the German First Army were wheeling south west and the advance elements had been involved already in skirmishes with the BEF.
Lt Spears the Liaison Officer to the French Fifth army had told Field Marshall French about the position the French Army was in following the actions along the Sambre, and the intent of General Lanzerac to withdraw.
Field Marshall French stated he would hold the line for 24 hours then withdraw in order to conform with the French movements.
Battle of Mons - Strategic Situation
Battle of Mons - Dispositions