Officer: 2LT- LTG The officer as opposed to a soldier in mandatory service, is an expert in the art of combat, although he may not be proficient in technically handling war materials. The officer has the authority to command, handle the army's resources, determine the general outlook and to carry out. NCOS: Non commissioned officer The NCOs continue their mandatory service to career, or return to service after they are released from mandatory service. Most of the NCOs serve in staff, logistic or technical drafts.