The Middle Ages have long been perceived as a “Dark Age” of military science during which the art of war had sunk to an unprecedented low point. No doubt this resulted in part from the relative lack of original theoretical texts produced by its protagonists. However, since the early decades of the twentieth century an increasing number of previously unknown primary sources have come to light that challenge old assumptions and present a rather more complex image of warfare in the Middle Ages.

One such discovery has been made recently in the Archdiocesan Archive (Nadškofijski arhiv) in Ljubljana, Slovenia. Among the extensive documentation from the late Middle Ages and the Early Modern period, the archive keeps a considerable body of records from the time of Bishop Christopher Rauber (c.1466–1536). These records, which have not been systematically investigated to date, also contain a collection of various documents produced during the Habsburg war against Venice (1508–16). In particular, one stands out from the military historian's perspective – a hastily sketched plan outlining a battle formation consisting of 41,500 troops.

To date, this fascinating find has escaped scholarly attention. The document itself perhaps raises more questions than it may answer.