OTTAWA (Reuters) - Canadian troops fighting Taliban militants in Afghanistan have stumbled across an unexpected and potent enemy -- almost impenetrable forests of 10-feet (three metre) tall marijuana plants.

General Rick Hillier, chief of the Canadian defence staff, said on Thursday that Taliban fighters were using the forests as cover. In response, the crew of at least one armored car had camouflaged their vehicle with marijuana.

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Sorta gives new meaning to "higher ground"