Соответствующая норма
Oman
Practice Relating to Rule 137. Participation of Child Soldiers in Hostilities
In 2005, in its second periodic report to the Committee on the Rights of the Child, Oman stated: “The current law does not permit the direct involvement of children under 15 years of age in any war, since they are incapable of discernment.” 
Oman, Second periodic report to the Committee on the Rights of the Child, 8 May 2006, UN Doc. CRC/C/OMN/2, submitted 28 April 2005, § 452.