There were a lot of generals involved in the campaign in northern France and Flanders that began on June 14, 1815, and culminated in the memorable Battle of Waterloo on June 18th. Altogether there were 240 of them, to command nearly 360,000 troops. And since the troops came from a lot of different armies — British, French, Prussian, Netherlands, Hanover, Brunswick, and a few others, telling the generals apart can be a bit confusing.
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Note that the rank structure is not really comparable to that prevailing today in the U.S. Army. The functional equivalent of a British major general or a French general de brigade or marechal de camp would actually be brigadier general based on their commands. The French rank system was actually much more complicated than may appear from the table. To begin with, the highest actual rank in the army was general de division. Marechal de l’Empire was technically a distinction, not a rank. Now it gets really complicated. A corps commander who was officially a general de division might by courtesy be designated a general de corps d’armee. However, a general de division might also sometimes be referred to as a lieutenant-general, particularly if he was functioning in a staff position. Meanwhile, the chief-of-staff of the army was designated major general. In addition, an officer commanding a brigade was more likely to be designated a marechal de camp (i.e., “field marshal”) rather than general de brigade, which was reserved for officers with special duties, such as the commanders of the regiments of the Garde Imperial. This complexity had developed as a result of the Revolution, which favored functional titles for military officers, chef de battailon for example, rather than major. Unfortunately, staff personnel often required rank, so the old Royal hierarchical titles of rank survived for a long time alongside the functional Revolutionary ones.
Further complicating matters was the fact that in all the armies an officer’s social rank was often used rather than his military rank. Thus, although Wellington was a Field Marshal he was usually referred to as “His Grace, the Duke” without his military rank. In Wellington’s case this could become quite complicated, as he was a duke thrice over, the Portuguese and Spanish having created him such even before the British, and he was also a Prince of the Netherlands. As each of these gave him a different title, references to him in Portuguese, Spanish, or Dutch works can easily become obscure. For example, to the Portuguese he was the Duque de Douro, and one Portuguese language history of the Peninsular War nowhere uses any other name for him. Then there is the problem of multiple ranks. Wellington, for example, was a field marshal in the British, Prussian, Netherlands, and Portuguese armies, as well as being a Capitan General in the Spanish Army. Although none of the other officers in the campaign had so many different ranks, several held more than one. For example, the Prince of Orange was a Dutch field marshal and a general in the British Army, while the Duke of Brunswick, who commanded his division in his capacity as duke, was also a lieutenant-general in the British Army.
Al Nofi, “Al Nofi’s CIC”, Strategy Page, 2000-02-01.
