kampala south sudan president give top job three general face u.n. sanction allege violations four-year-old civil war campaign group human right watch call promotions slap face justice presidency say three men good officer falsely accuse decree read state radio late thursday president salva kiir appoint marial chanuong new head army operations train intelligence santino deng wol head grind force gabriel jok riak name deputy chief defense u.n. security council impose travel ban asset freeze three others 2015. accuse chanuong command troop lead slaughter nuer civilians around capital juba december 2013 include hundreds say reportedly bury mass grave country anything country chanuong tell reuters friday unite nations say wol command troop kill children women old men 2015 offensive riak violate ceasefire early 2014. kiir spokesman ateny wek ateny say three general genuine obedient commanders falsely accuse human right watch say announcement make eve fourth anniversary war outbreak show impunity enjoy commanders accuse abuse people nominate new position slap face justice slap face international community organization jonathan pednault tell reuters south sudan plunge civil war december 2013 political crisis escalate fight force loyal kiir ethnic dinka rebel ally former deputy riek machar nuer conflict reopen ethnic fault line spread across country dozen arm group battle land resources revenge power amid widespread report rape murder torture several ceasefires agree break tens thousands kill since war break south sudan 's kiir promote three general face u.n. sanction