Trying to achieve victory at any cost, the warring parties resort to various unconventional forms and methods of armed confrontation. They can be technical “revolutionary” developments, the formation of friendly armies from the population of entire nations, and active sabotage warfare against the enemy. The book offered to readers connects the theme of retribution during the Second World War: the famous German V-missiles, the long-suffering history of the Polish army and sabotage operations in various theaters of war.