Opole/poland - May 02 2016: Polish Flag Day in Opole. Cavalry, Militaries on War Horses. Reenactment of Historical Events. Group of Soldiers at Costume Parade, Evening Sky on Background. Soldiers Are Riding and Then Stop. People in Authentic Vintage Costumes, Military Uniform of World War the Second. Demonstrations of Horse Regiment on Green Springtime Meadow, Outdoors. Trees Around the Meadow, Parade in Park. Holiday.