Opened in 1994, the memorial details all the wars Korea has been involved since its early days. Anyways, the Korean War Memorial is located near Yongsan. The quickest way is to exit via the Samgakji subway station and the walk will be about five minutes. Definately worth a visit if you're coming to teach English in Seoul.
Near the main entrance to the memorial you will see The Statue of Brothers:
Here's a picture of a mosaic from inside the dome:
The Statue of Brothers behind a piece of artillery:
Statues Defending the Fatherland:
The Stone Bowl is the pedestal of the Statues Defending the Fatherland: