English

Definition of active service noun from the Oxford Advanced Learner's Dictionary

 

active service

 noun
noun
BrE BrE//ˌæktɪv ˈsɜːvɪs//
 
; NAmE NAmE//ˌæktɪv ˈsɜːrvɪs//
 
(North American English also active duty) [uncountable]
 
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the work of a member of the armed forces, especially during a war troops on active service
See the Oxford Advanced American Dictionary entry: active service