My knowledge is nearly 10 years old, but I served in the Army as an Infantry Officer. When I was promoted to Captain in 2006, I was given a temporary duty assignment to work on a staff training exercise that would simulate a war involving ground forces on North Korea. Basically we sat in front of computer monitors and pretended to be different subordinate units reporting to a division command staff so the staff could practice working and directing a major combat operation.
It was a very sobering experience. The weapons, units, and capabilities of the North Koreans was based on our estimates at the time. Using the knowledge that we had of them at the time, they were able to do a lot of damage and hurt our forces significantly. Granted, it was a simulation and Im sure things were skewed in the effort to make the staff struggle and work, but it was still insightful.
Actually on a personal note that simulation upset me deeply at the time. I had gotten back from Iraq where I served as an Infantry Platoon Leader about 9 months earlier and I was on the fence as to whether I should get out of the army or stay in (I hated that war, but I loved the people I served with and I honestly gave a damn about making the world a better place). I was involved first hand in some pretty intense combat in Iraq and I actually lost 5 Soldiers under my command. I personally drug one of the five out. During the simulation a lot was going through my head and I realized I was done with the Army. I couldnt lead troops in combat. Flashbacks and whatnot were very real to me. This was about 2 years before I actually got a diagnosis of PTSD.
Im sure its not an uncommon position on this forum, but Im very against any conflict with North Korea.