By the end of August the 17th Division of Infantry and the 2nd Division of Landwehr, under the Grand Duke of Mecklenburg-Schwerin, in addition to the 3rd Reserve Division already on the spot under General Kunsmor, were brought up to take part in the investment of Metz. The troops sent forward to reinforce the Baden Division before Strasburg were the Landwehr Division of the Guard, the 1st Reserve Division, and the 1st brigade of reserve cavalry. During August, counting all ranks, sick or well, and including every species of non-combatant, the mean strength of the Armies in the field was 780,723 men, and 213,159 horses. II THE FRENCH ARMY. COMMANDER-IN-CHIEF, THE EMPEROR NAPOLEON III.; “Major-General” or Chief of the Staff, Marshal Lebœuf, assisted by General Lebrun and General Jarras; Commander of Artillery, General Soleille; of Engineers, General Coffinières de Nordeck. IMPERIAL GUARD. COMMANDER-IN-CHIEF, General Bourbaki; Chief of the Staff, General d’Auvergne; Commander of Artillery, General Pé d’Arros; Divisional Commanders: 1st Div. (Voltigeurs), General Deligny; Brigadiers: 1st Brig., General Brincourt; 2nd Brig., General Garnier. 2nd Div. (Grenadiers), General Picard; Brigadiers: 1st Brig., General Jeanningros; 2nd Brig., General le Poitevin de Lacroix. Strength of Corps: 24 battalions; 24 squadrons—(Desvaux’s Div. of three brigades, commanded by Halna du Fretay, De France, and Du Preuil, consisting of Guides, Chasseurs, Lancers, Dragoons, Cuirassiers, and Carbineers)—60 guns, and 12 mitrailleuses; 2 companies of Engineers. _First Corps._ COMMANDER-IN-CHIEF, Marshal MacMahon, Duke of Magenta; Chief of the Staff, Gen. Colson; Commander of Artillery, Gen. Forgeot. Divisional Commanders: 1st Div., Gen. Ducrot; 1st Brig., Gen. Wolff; 2nd Brig., Gen. de Postis du Houlbec. 2nd Div., Gen. Abel Douay; 1st Brig., Gen. Pelletier de Montmarie; 2nd Brig., Gen. Pellé. 3rd Div., Gen. Raoult; 1st Brig., Gen. l’Hériller; 2nd Brig., Gen. Lefebvre. 4th Div., Gen. Lartigue; 1st Brig., Lieut.-Gen. Fraboulet de Kerléadec; 2nd Brig., Gen. Lacretelle. Strength of Corps: 52 battalions—45 deducting the regiments left in Strasburg; 28 squadrons—Duhesme’s brigade of Cuirassiers, Hussars, Chasseurs, Lancers, and Dragoons—96 guns and 24 mitrailleuses; 5½ companies of Engineers. _Second Corps._ COMMANDER-IN-CHIEF, General Frossard; Chief of the Staff, Gen. Saget; Commander of Artillery, Gen. Gagneur, 1st Div., Gen. Vergé; 1st Brig., Gen. Letellier Valazé; 2nd Brig., Gen. Jolivet. 2nd Div., Gen. Bataille; 1st Brig., Gen. Pouget; 2nd Brig., Gen. Fauvart-Bastoul. 3rd Div., Gen. de Laveaucoupet; 1st Brig., Gen. Doëns; 2nd Brig., Gen. Micheler. Strength of Corps: 39 battalions; 16 squadrons—(Valabrègue’s Division, 4 regiments of Chasseurs and Dragoons)—72 guns, 18 mitrailleuses; 5 companies of Engineers.