USA Officers Iron Battalion U.S.R. Cambridge Mass. Aug-Sept 1917 brass token tally WW1

Officers Iron Batallion U.S.R. Cambridge Mass(achussetts). Aug-Sept 1917 brass token tally

brass 25.8mm holed.

This would appear to be related to the Iron Battalion;  part of the expeditionary force when America joined the allies in 1917 WW1