The continued misconduct of the Sana Kachins from beyond the administrative border rendered punitive measures necessary in the eyes of British colonialists. No retaliation had taken place since the attack on Myitkyina in December 1892. Now two columns were sent up, one of 250 rifles from Myitkyina, the other of 200 rifles from Mogaung, marching in December 1895. The resistance was insignificant, and the operations were completely successful. A strong force of military police was stationed at Myitkyina, with several outposts in the Kachin hills.