The existence of a partnership between knowledge and armies - and, connected with it, between knowledge and wars, conquests, and the entire apparatus of empires - has been affirmed since the time of Xenophon. The troops clear a path that the scholars follow, and an increase of knowledge is a side effect of the incursion. The great linguistic discoveries of the eighteenth century - that is, the Zend and Sanskrit languages - would have been impossible without the expansion of the French and British empires into Asia; and Bonaparte, in his foray into Egypt, was accompanied by a large contingent of scholars. After the uniformed troops march in, official scholarly missions follow. For example, in 1849, Italian archives were opened to French scholars as a result of the French occupation of Rome. Renan's access to Italian libraries, monasteries, and manuscript collections was a result of the presence of French troops in Italy. This was a period of preliminary analyses, of the publication of catalogues, and of amazement at the wealth of available documents. In brief, it was a period of successful compilation, of rapid and exhilarating erudition. It was a time when everything rang true. In 1860, it was once more Renan who set off, on the margins of the French intervention in Syria and Lebanon, in search of epigraphical materials. In fact, all of nineteenth-century French, German, and English archaeology follows in the wake of the colonial expansion of the various empires.