revanchist (n.) Look up revanchist at Dictionary.com
"one seeking to avenge Germany's defeat in World War I and recover lost territory," 1926 (on model of French revanchiste), from revanche "revenge, requital" (1858), especially in reference to a national policy seeking return of lost territory, from French revanche, literally "revenge," from Middle French revenche, back-formation from revenchier (see revenge).