Czech soldiers decided to show off their "training" in a knife fight. A knife fight, in addition to being one of a million possible scenarios (somewhere such is the likelihood of using these skills), is also one of the elements of psychological preparation.
But in the absence of time to train in basic military disciplines, it is an irrational use of time. Aside from the weird drill, it's funny to see a man with a machine gun. *When the Majd decided to practice knife warfare, and the personnel is waiting for approval of vacation reports.