Top definition
Followers of Swansea City Football Club.

The Jack Army represents the contingent who rarely actually make it to games having either got too drunk, been beaten up by rival supporters, been arrested or all of the above.

When they do make it to games they chant the 2 words 'Jack Army' repeatedly from the terraces in order to assure temselves of their identity
From the terrace
"Jack Army, Jack Army, Jack Army, Jack Army, Jack Army, Jack Army, Jack Army, oooooooohhhhhh, Jack Army, Jack Army, Jack Army, Jack Army, Aaaaaaaaaaaaa, Jack Army, Jack Army"
by Jules W December 08, 2008
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