cutless

http://www.libertyagtr5div.org/Uuniform_history.htm

CUTLASS-- a short saber with a cut and thrust blade and a large hand guard. Issued to enlisted men as a sidearm and maintained in ships armories until the beginning of WWII. The weapons was officially declared obsolete in 1949. The Cutlass was considered an organizational issue item, but was never considered to be a part of the enlisted uniform.

* Some info from the 1866 uniform regulations, and the vertical file.