DuPre, whose musical abilities have earned him the nickname “Harmonica Pete,” has reportedly played the national anthem live before.
The 96-year-old served as a medic in the 114th General Hospital Unit in Kidderminster, England where he treated wounded service members from across Europe during World War II, USWNT told nj.com.
USWNT -- coming into the match unbeaten in their last eight games -- capped of their send-off series with a 3-0 win over Mexico. Their next tournament is slated for June 7 in Paris.
Fox News' Lucia I. Suarez Sang contributed to this report.