means military service and "operations in defence of the Republic" means military operations—
| (a) | in time of war; or |
| (b) | in connection with the discharge of the obligations of the Republic arising from any agreement between the Republic and any other state; or |
| (c) | for the prevention or suppression of any armed conflict outside the Republic which, in the opinion of the State President, is or may be a threat to the security of the Republic; |
[Definition substituted by section 1 of Act No. 35 of 1977]