Pteris Slavens attended from 1893 a Junker-school and entered in the Tsarist Army, and in 1917, he retired as a regimental commander for health reasons and was in various hospitals for treatment.
Slavens attended from 1893 a Junker-school and entered in the Tsarist Army. In 1917, he retired as a regimental commander for health reasons and was in various hospitals for treatment. 
