All citizens without serious physical and mental disabilities are required to complete 2 year military service until the age of 30, starting from 18. The service may be completed in batches of no less than 2 months. Failing to do so will result in fine equivalent to average 2 year income. Compulsory 2 year military service involves basic military training, physical exercises, basic medical training, driving courses, doing of public services(cleaning up, helping to organize public events, etc). In time of war, some or all of citizens who have completed the 2 year service may be conscripted.