This sword has been in my family for decades. My parents believe it was my Grandfather's, who did serve in the U.S. military in WW1. I would like to believe that but with all of my research and outside of the date, I have never been able to tie this sword to any particular conflict or period. The sword is 28 3/4 inches (98.4cm) long in the sheath. Does anyone have any idea about this sword?