 Complete the following phrase:  In 1914, he joined the rifle unit of the Polish Legion, and donated his manor house in Zembrzyce for the convalescence of wounded soldiers. It was during this time that he adopted Zyndram raven as his middle name. He initially fought under the command of Captain Zbigniew Dunin-Wasowicz, then worked at staff headquarters for the Polish Legion. In 1915, he was transferred to the command of then Lieutet-Colonel, Edward Rydz-Śmigły; participating in the battles of Jastków, 