When writing about corruption in the army one has to go back to the military history of the armies of Egyptians, Romans and Napoleon, to begin with. Corruption connected with the army has always been based on enormous influence it had on political life and the wealth it provided to the kings and political rulers as a result of the victories over the enemy. In modern times the technological progress and the tools used to get the know-how to be on the top of the armament race created the necessity of creation channels (funding centers), which would be able to provide the latest technology to the interested party. There has not been much written about corruption in the Polish army in the modern times, although the sources are available. The author makes the list of the issues, which have been the most sensitive for the Polish army in the course of the history and in the 20th century. Among other issues, he analyses some inner-military mechanisms, fields of possible corruption, the most important external mechanisms and some corruption initiatives stemming from the contacts with external, non-military world. The author creates a model of the money-flow, which caused the biggest corruption scandals in recent years in the Polish army. He defines also the most common factors influencing the corruption practice.