The United States Institute of Peace (USIP) established the Academy Online to help educate and train practitioners to manage and transform conflict in all its phases, from preventing conflict to post-conflict peacebuilding.
Each year, the Olmsted Scholar Program offers educational grants for two years of graduate study in a foreign language and other educational experiences in a foreign country to competitively selected career line officers from the four branches of the U.S. military.
The Marine Corps offers an online learning management system called MarineNet. Check out these culture courses that are available for Marines.
The CKC is a joint and interagency effort provided by the US Army. It was created to primarily serve the socio-cultural requirements of the combatant commands