Korea has had a tough history.
I'm sure you're familiar with the Korean War. But the nation has been invaded countless times over the centuries from all sides. The museum honors those who fought to protect their country and tell their stories.
The easiest access is via subway Line 4 or Line 6; get off at Samgakji Station. Take Exit 12 and follow the road for a couple minutes; you can't miss the museum just after the first stoplight.