thanks a.godumov, cheers :)
It is from the painting „Na Nozh“ ("By byonette" or "Byonette charge") by Jaroslav Věšín - http://en.wikipedia.org/wiki/Jaroslav_V%C4%9B%C5%A1%C3%ADn . It depicts a Bulgarian byonette charge during the First Balkan War of 1912. Best regards,
a.gudumov, excuse me, but where have i seen your avatar?