Link 1 - http://www.koreanwar.org/  

 

 

    Phenomenal site, very well put together. From here you can search all kinds of information, of course pertaining to the Korean War. There is an extremely user friendly interface that is used, to browse Memorials, Maps, Veteran sites, and much more. This is specifically listed under the Unites That Served section due to the fact that you can search for any unit you like, or even any Person. One of the best Korean War sites currently running.