ウラー

interjection

hooray; hurrah

Russian-derived interjection used as a battle cry or celebratory shout, similar to the English 'hooray' or 'hurrah'. Often associated with military or historical contexts.

from Russian ura

• 兵へい士したちは「ウラー！」と叫さけんで突とつ撃げきした。

  The soldiers shouted 'Hurrah!' and charged.