during world war ii, "lst-849" was assigned to the asiatic-pacific theater and participated in the assault and occupation of okinawa gunto in may and june 1945. following the war, "lst-849" performed occupation duty in the far east until mid-september 1945. she returned to the united states and was decommissioned on 13 june 1946 and assigned to the pacific reserve fleet. while berthed in the columbia river with the pacific reserve fleet, she was named "johnson county" 1 july 1955, after counties in 12 states.