The coastal defence troops of the Russian Navy are conventional mechanised brigades with the main task to prevent enemy amphibious landings. An example of coastal defence troops are those of the Baltic Fleet. With Estonia, Latvia and Lithuania declaring independence at the end of the Soviet Union the Baltic Military District practically disintegrated. The massive ground forces formations left landlocked in the Kaliningrad Oblast were transferred from the ground forces to naval command and control. The integration of naval infantry and coastal defence troops is a relatively new tendency from the 2010s in order to simplify the naval command structure and the new Arctic infantry brigades in formation under the Northern Fleet Joint Strategic Command fall within that process.