Down a ruler-straight road flanked by the whitewashed walls of Mont-Saint-Jean Farm — the very complex where the Duke of Wellington established his headquarters on the eve of the Battle of Waterloo, 17–18 June 1815 — a horse-drawn wagon sits loaded beside the towering gatehouse whose stones absorbed the chaos of one of history's most consequential battles; the English-language caption block below recounts how Wellington sheltered here, how the buildings served as field hospitals for Allied wounded, and how a cuirassier of Milhaud's corps, who had broken through English lines during Ney's charges, was killed on this spot. Published by E. Desaix of Brussels under the "La Belgique Historique" marque with a "Marque Déposée" seal, this early undivided-back (UDB) era card — whose plain back with only three address lines and no message space dates it to the earliest postcard regulations, c.1898–1904 — is a touchstone piece for Napoleonic battlefield and Belgian historical postcard collectors.