Cimarron continued her service into the Vietnam War between 1965 and 1967 and received the Armed Forces Expeditionary Medal and Vietnam Service Medal for its participation in the Vietnam Advisory Campaign, Vietnam Defense, and Vietnamese Counteroffensive Phases I through III.
In 1968, she was the oldest US Navy ship in continuous active service.
Cimarron was decommissioned and struck from the Navy List in October 1968 and sold for scrap in 1969.

The bell from the ship was installed at Cimarron High School in Cimarron, New Mexico, where it was donated because of its proximity to Cimarron River Basin's headwaters and in recognition of this ship's dedicated crew members.
Cimarron continued her service into the Vietnam War between 1965 and 1967 and received the Armed Forces Expeditionary Medal and Vietnam Service Medal for its participation in the Vietnam Advisory Campaign, Vietnam Defense, and Vietnamese Counteroffensive Phases I through III. In 1968, she was the oldest US Navy ship in continuous active service. Cimarron was decommissioned and struck from the Navy List in October 1968 and sold for scrap in 1969.
The bell from the ship was installed at Cimarron High School in Cimarron, New Mexico, where it was donated because of its proximity to Cimarron River Basin's headwaters and in recognition of this ship's dedicated crew members.
USS Cimarron (AO-22)