Concerns were raised over the future of Cawdor Barracks in Brawdy, Pembrokeshire, earlier this year.
The barracks houses some 700 military personnel as home of the 14th Signals Regiment and plays a massive role in the economy of west Wales.
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Ian Paul Mcguigan and two men from Liverpool were caught after a police surveillance operation.
The case has now been adjourned until February, due to a delay which the judge blamed on Brexit.
Police described it as a 'particularly vicious crime'.