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Yeah, I'd be interested to know that too. Ordered mine today, but the information is unclear, some sellers say it's twelve figures plus six horses others that it's 24 figures + six horses. 24 would make more sense, as there's one horseholder per sprue and the guy is supposed to hold three horses, so two sprues of figures seem apt. Guess we'll know soon enough.
That sounds fine to me. This ratio of men on foot to horses is ideal to re-create dismounted units with limited numbers of horses - as you point out John, as at Blenheim.
For wargames purposes I'd suggest that this also (just about) works for units with horses but which are being shown on foot. A line of dragoon horses can be represented by a few horses plus holder at one end of the line and a few at the other. The firing line is then represented by the men on foot in front.