Xin Yu mentions something like this in his Spartacus Strategy at the Art of War hp (http://aow.apolyton.net). I myself played it only to chapter three but I haven't encountered with this unit.
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Mighty Carthage fought three wars:
It was still mighty after the first one, still inhabitable
after the second one;
It could not be found after the third one.
-Bert Brecht
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