The definition of cco:ont00001226 (Act of Employment) is:
An Act of Association wherein an Organization assigns a set of activities to some Person to be performed in exchange for financial compensation.
The definition of cco:ont00000308 (Act of Military Service) is:
An Act of Employment wherein a Person serves as a member of a Military Force, whether voluntarily or by conscription.
A Person serving by conscription does not perform activities in exchange for financial compensation. Many who volunteer to serve do so more out of a sense of duty to their country than in expectation of financial compensation.