A Turkish Cavalryman by Albrecht Dürer

Referenced on p.30, ELI - 58 The Janissaries by David Nicolle and Christa Hook:
Pen and ink drawing of a senior Ottoman officer by Dürer around 1495. This man's flanged mace, as well as the size of his turban, were a mark of rank or command. (Albertina Collection, no. 3916. D.171, Vienna)