This Belgian commemorative stamp, issued in 1990 with a 14 franc denomination, honors the Campaign of 18 Days during World War II. The design depicts the monument at Liège, showing Belgian soldiers and a mounted officer in solemn remembrance of the defense against the German invasion of May 1940. The bold red and yellow background symbolizes both sacrifice and national resilience. Issued in bilingual French and Dutch inscriptions, it reflects Belgium’s dual heritage. A poignant issue, it remains a significant piece for collectors of military history and World War II philately.