Operation N
Operation N ( , where "N" stands for the Polish word ""Niemcy" , " "Germany" ) was a complex of sabotage , subversion and black-propaganda activities carried out by the Polish resistance against Nazi German occupation forces during World War II , from April 1941 to April 1944 . 
<triplet> Operation N <subj> World War II <obj> conflict <triplet> Polish resistance <subj> World War II <obj> part of <triplet> Nazi German <subj> World War II <obj> participant in