_16th Corps_ (General Taverna). _I Bavarian Corps_ (General von Xylander). 32nd and 31st Divisions. On the Mortagne, between Einvaux and _I Bavarian Corps Gerbéviller. Reserve_ (General von Fasbender). 1st ARMY (General DUBAIL). VII ARMY (General von HEERINGEN, till the _8th Corps_ (General de Castelli), night of September 6). with 8 groups of Alpinist reserves added. From Gerbéviller southward. _XIV Corps_ (General von Hoeningen). _6th Cavalry Division._ West of Baccarat. Till September 8. _XIV Corps Reserve._ _18th Corps_ (General Alix). Both the above were At the centre, till September 10. transferred to the VI Army on September 6. _58th Division Reserve._ _XV Corps_ (General von _57th Division Reserve_ (General Deimling). Bernard). Detached, September 7, _71st Division Reserve._ with Heeringen, to the Aisne. In support, south of Bruyères. _XV Corps Reserve._ _14th Corps._ At first only the 30th West of the St. Dié valley. Division Reserve; later the 39th _44th Division_ (General Soyer). Division Reserve arrived. In the St. From the Army of Alsace. Dié valley. _41st Division._ _Ersatz and Landwehr Brigades._ South of St. Dié and east of the Meurthe. Uncertainty as to some German units, and the continual transfer on both sides, make an accurate comparison of strength impossible. M. Hanotaux[73] estimates the French forces at their maximum at 532,000, and the German at 530,000 men. This was during the battle of the Gap of Charmes, and at the end of August. On September 4, Castlenau had lost 70,000 men or more, and the 1st Army was similarly reduced in the following days. On the other hand, Heeringen took the 15th Corps with him to the Aisne on September 7. It is probable that, during the crucial struggle before the Grand Couronné, Castlenau was considerably outnumbered; and the French were markedly inferior in artillery, even when the heavy fortress guns had been brought into the field.