of 1917 , students of junker schools in petrograd rose Cause_change_of_position_on_a_scale up against the bolsheviks under the leadership of the committee for salvation of motherland and revolution ( unk unk unk UNK unk ) , organised by the right unk .

at 8:30 a.m. on october 29 , the leaders of the junker mutiny sent Sending out telegrams all over petrograd , announcing the success of the rebellion and calling out for the arrest of all the pmrc commissars and the concentration of participating military units at the unk school of engineers .