Danish Soldiers in the Trenches of Dybbøl (1864)

Title: Kampene ved Dybbøl, 1864 (The Battle of Dybbøl, 1864)
Artist: Jørgen Valentin Sonne
Date: 1871

The Battle of Dybbøl (Danish: Slaget ved Dybbøl; German: Erstürmung der Düppeler Schanzen) was the key battle of the Second Schleswig War and occurred on the morning of 18 April 1864 following a siege starting on 7 April. Denmark suffered a severe defeat against Prussia, which decided the war. Dybbøl was also a battlefield in the First Schleswig War.

Source :
https://en.wikipedia.org/wiki/Battle_of_Dybb%C3%B8l