Military are performing their difficult "Spartakiad" sports composition (National gymnastics festival) at the Strahov stadium in Prague. Major Melichar and major Rybár have been proudly watching the soldiers, sharing the joy over the large applause by the audience. Only captain Chmelar is missing, who was successfully preparing the division unit for their performance. It was not an easy job. The composition was demanding, and major Melichar insisted that the soldiers must not neglect any of their regular military duties.