▁a ▁resolution ▁that ▁" only ▁se cur ing ▁the ▁area ▁by ▁Polish ▁Army ▁can ▁solve ▁the ▁problem ." ▁The ▁Se j ny ▁branch ▁of ▁the ▁Polish ▁Military ▁Organ ization ▁( P MO ), ▁led ▁by ▁Polish ▁regular ▁army ▁officers ▁Adam ▁Rud nick i ▁and ▁W ac ław ▁Z aw ad z ki , ▁began ▁prepar ing ▁for ▁the ▁u pr ising ▁on ▁August ▁ 1 6 . ▁P MO ▁members ▁and ▁local ▁milit ia ▁volunte ers ▁number ed ▁some ▁ 9 0 0 ▁or ▁ 1 , 2 0 0 ▁men ▁( s ources ▁vary ). ▁The ▁u pr ising ▁was ▁scheduled ▁for ▁the ▁night ▁of ▁August ▁ 2 2 ▁to ▁ 2 3 , ▁ 1 9 1 9 . ▁The ▁date ▁was ▁chosen ▁to ▁co inci de ▁with ▁the ▁withdraw al ▁of ▁German ▁troops ▁from ▁the ▁town ▁of ▁Su w ał ki . ▁The ▁Pol es ▁hoped ▁to ▁capture ▁the ▁territory ▁up ▁to ▁the ▁F och ▁Line ▁and ▁advance ▁further ▁to ▁take ▁control ▁of ▁the ▁towns ▁of ▁Se iri ja i , ▁Laz d ij ai , ▁Kap č iam iest is ▁as ▁far ▁as ▁Sim nas . ▁ ▁According ▁to ▁the ▁Polish ▁historian ▁T ade usz ▁Ma ńcz uk , ▁Pi ł s ud ski ▁– ▁who ▁was ▁planning ▁a ▁coup ▁d ' état ▁in ▁Ka unas ▁– ▁disc ou rag ed ▁the ▁local ▁P MO ▁activ ists ▁from ▁carrying ▁out ▁the ▁Se j ny ▁U pr ising . ▁Pi ł s ud ski ▁reason ed ▁that ▁any ▁host ilities