Alfred von Schlieffen his troops were pushed back in the Battle of the Marne. Schlieffen was perhaps the best-known contemporary strategist of his time, although criticised for his "narrow-minded military scholasticism." Schlieffen's operational theories were to have a profound impact on the development of manoeuvre warfare in the 20th century, largely through his seminal treatise, "Cannae", which concerned the decidedly un-modern battle of 216 BC in which Hannibal defeated the Romans. Cannae had two main purposes. First, it was to clarify, in writing, Schlieffen's concepts of manoeuvre, particularly the manoeuvre of encirclement, along with other fundamentals of warfare. Second, it was to be
Battle of Cannae intercalations, either by accident or for political advantage. A review of the evidence led P.S. Derow to identify the equivalent Julian date would be 1 July 216 BC; other authorities have suggested other Julian dates. Figures for troops involved in ancient battles are often unreliable, and Cannae is no exception. They should be treated with caution, especially those for the Carthaginian side. The Carthaginian army was a combination of warriors from numerous regions, and may have numbered between 40,000-50,000. Along with the core of an estimated 8,000 Libyans, there were 8,000 Iberians, 16,000 Gauls (8,000 were left at camp the