Definition of the Territorial Army noun from the Oxford Advanced Learner's Dictionary

 

the Territorial Army

 noun
noun
BrE
 
; NAmE
 
[singular + singular or plural verb](abbreviation TA)
 
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(in Britain) a military force of people who are not professional soldiers but who train as soldiers in their free time, now called the Army Reserve Culture The Territorial Army joined together with the British Army to fight in the Second World War . The TA was established in 1908 and is part of the Volunteer Reserve Forces. Since 2013 it has been known as the Army Reserve.