Since 1998, UNC has seen a gradual increase of permanent international staff within the command. In between 1998 and 2003, several of the original contributors to the Korean War began deploying personnel to Korea to support UNC's armistice maintenance functions. This internationalization has continued over the next decades. In May 2018, Canadian Lt. General Wayne Eyre became the first non-American to serve as deputy commander of the UNC. Succeeding him was Australian Vice Admiral Stuart Mayer, continuing the trend of non-American leadership in UNC.