Designed by Svend Lindhard, "Vore Faldne" (Our Fallen) is a bronze Memorial to the fallen Danes in the Allied Forces of World War II. The monument is located just outside the main entrance to the Kastellet, a Danish citadel.
I didn't have much time in Copenhagen and was taking a brisk walk around town. As it was a Tuesday morning, the grounds were relatively quiet, and I only even noticed one or two other tourists. If you're visiting Denmark, it's worth noting that lots of tourist sites - Museums, Cathedrals - are closed on Mondays, so plan accordingly.