Despite instructions to minimize the revolutionary side of their policies, the leaders of Montenegrin Partisans introduced "Soviet elements" in the summer of 1941, during the uprising in Montenegro, because they perceived the uprising as the first stage of the communist revolution. On 27 July 1941 the Communist command for Montenegro issued an order for establishment of courts-martial aimed against those who they perceived as a fifth column, ending their order with proclamation "Patriots, destroy the fifth column and victory is ours!". The frequent killings under the Leftist errors policy began in Montenegro since August 1941 while its intensity was increased since September 1941.