Houssaye, "1815," pp. 133-138, 186, notes.
Hamley, "Operations of War," p. 187.
For Gérard's delays see Houssaye, p. 158, and Horsburgh, "Waterloo," p. 36. Napoleon's tardiness is scarcely noticed by Houssaye or by Gourgaud; but it has been censured by Jomini, Charras, Clausewitz, and Lord Wolseley.