The following 50 cases are presented as representative of psychical illness among the Services in Singapore. The majority are R.A.F. personnel, though a few have been included from Navy and Army sources. There are also in this series six cases of such illness among wives of Service personnel. These last have been included, because nervous illness necessitating repatriation and occurring in wives presents the same quantitative inconvenience to the authorities as such illness in the troops themselves, for in these cases the husband is usually repatriated as escort.