On Friday, the New England Patriots and New England Revolution will become the first teams in the major professional sports leagues to leave a spectator’s seat permanently unoccupied in their stadium to honor servicemen and servicewomen who have been listed as prisoners of war or missing in action.

Since World War I, more than 92,000 American military personnel have gone unaccounted for, according to The Kraft Group, which owns Gillette Stadium in Foxborough. The designation of the seat at the stadium comes as Americans prepare for Veterans Day on Sunday.