 Complete the following phrase:  In 1410 Rawicz bearers took part in the Battle of Grunwald. Among 50 Polish gonfalons regiments one the 26th took the field under Rawa coat of arms and was led by Christian of Ostrów, Kraków castellan. He was also a war councilor, one of the seven chief members of General Headquarters of Władysław II Jagiełło. In addition, one of the Rawicz bearers is marked for his military valour in the 