Illustrations of Ottomans circa 1809 from

Stratford Canning's Pictures of Turkey
Sipahi, or cavalry soldier

Note the blunderbus over his shoulder and the musket under his leg.

Physical description: A soldier on horseback, carrying a long lance
Object: Watercolour
Place of origin: Istanbul, Turkey (Painted)
Date: about 1809 (Painted)
Artist/Maker: Anonymous Greek artist (Painter)
Marks and inscriptions: Numbered 71
Dimensions: Height: 32.8 cm, Width: 21.2 cm
Victoria and Albert Museum. Museum number: D.88-1895