The ranks of the Volunteer Enlisted Soldiers and the minimum time of serving their own rank are as follows:1. Private: Six months.2. Private 1st Class: One year.3. Private Upper Class.The service time of Standing Soldier in Reserve Service shall be accumulated from his original rank, since the date the military service began.The maximum number of year limit of military service of the Private Upper Class is 10 years, starting from the day of their promotion.The period of leave without pay of volunteer enlisted soldiers is not computed in the minimum time of serving their own rank and the maximum number of years limit of military service of the Private Upper Class, regulated in the preceding Subparagraphs 1 and 3.The pay grades and pay units of volunteer enlisted soldiers shall be governed by the attached table stipulated from the Subparagraph 2 of Article 4 of the Pay Act of the Armed Forces; the transfer of pay grades of promotion to noncommissioned officers refers to the attached table.