The Amur Cossack Host patrolled the borders along the Amur River and Ussuri River (in 1889, a separate Ussuri Cossack Host was created for patrolling the Ussuri). It also staffed the Amur-Ussuri flotilla (river squadron), created in 1897. The Amur Cossacks possessed 5,8 million desyatinas of land (64,000 km2). The Cossack population (120 settlements) numbered 49,200 people. In times of peace, the Amur Cossack Host supplied 1 mounted regiment (4 ) and 1 platoon of local guards. In times of war this contribution expanded to two mounted regiments,