"call-up"

when used as a noun, means a command addressed to any person or any category, class or group of persons liable under this Act to render service or to undergo training in the South African Defence Force or the Reserve, to render such service or to undergo such training and to do or comply with anything required in terms of any law to be done or complied with in regard to such service or training, and 'call up', when used as a verb, 'call up for service' and, in section 92bis only, 'notified' and 'authorize' have corresponding meanings;

[Definition amended by section 1(a) of Act No. 72 of 1995]