Major-General Alexander (1966) also wrote a version of his experience as the head of the Ghanaian military, until Nkrumah relieved him.  Alexander's text is a general criticism of the armed forces in Ghana and the government's handling of them.  It is not a key work for this study.  Nkrumah only speaks negatively of him in reference to his failure to protect Ghanaian soldiers in the Congo crisis.  He does not figure, however, as largely in Nkrumah's picture as Geoffrey Bing does.