Uhlan
Uhlans (in Polish: "Ułan"; "Ulan" in German) were Polish light cavalry armed with lances, sabres and pistols. The title was later used by lancer regiments in the Russian, Prussian, and Austrian armies.
Uhlans typically wore a double-breasted jacket (kurta) with a coloured panel (plastron) at the front, a coloured sash, and a square-topped Polish lancer cap (czapka) also spelt 'chapka,' chapska and schapska. This cap or cavalry helmet was derived from a traditional design of Polish cap, made more formal and stylised for military use.
Their lances usually had small, swallow-tailed flags (known as the lance pennon) just below the spearhead.
Read more about Uhlan: Appearances in Popular Culture