[irmbrady]

The US military had a big involvement in the Korean War (88% of the South Korean force [1]), and to this day are posted at the demilitarised zone in the Korean Peninsula.

http://en.wikipedia.org/wiki/Korean_War [1]

Here is an interesting read: http://en.wikipedia.org/wiki/Division_of_Korea

[damian2000]

Interesting article - the division is similar to how Germany was divided into east and west.

[zokier]

Kinda similar, but then also different. Afaik the relations between east and west germanies were peaceful, while north and south koreas are at war, albeit in extended ceasefire. I'm not sure if DPRK even acknowledges ROK as a lawful government/entity.