Based on a summary of the historical fact I seek to highlight the decisive fact (s) causing the negative result (s) before playing the simulation through a board wargame - the actions on the "other side of the hill" (from the enemy) are studied through a parallel electronic wargame. In the simulation all the possibilities of the purpose of the study are completed when the past of history is analyzed on the basis of present theory and projected into the future or revived as a what if schematic case.