Founders of the Zetas drug gang learned special forces techniques at Ft. Bragg before waging a campaign of carnage.

Despite the deployment of 50,000 troops, Mexico seems to be losing the 'war on drugs' [AFP]

(U.S. BORDER WITH MEXICO) - It was a brutal massacre even by the gruesome standards of Mexico’s drug war: 72 migrant workers gunned down by the "Zetas" - arguably the country's most violent cartel - and left rotting in a pile outside a ranch in Tamaulipas state near the US border in late August.

The Zetas have a fearsome reputation, but the real surprise comes not in their ruthless use of violence, but in the origins of where they learned the tricks of their bloody trade.

Some of the cartel's initial members were elite Mexican troops, trained in the early 1990s by America’s 7th Special Forces Group or "snake eaters" at Ft. Bragg, North Carolina, a former US special operations commander has told Al Jazeera.

“They were given map reading courses, communications, standard special forces training, light to heavy weapons, machine guns and automatic weapons,” says Craig Deare, the former special forces commander who is now a professor at the US National Defence University.

"I had some visibility on what was happening, because this [issue] was related to things I was doing in the Pentagon in the 1990s," Deare, who also served as country director in the office of the US Secretary of Defence, says.

The Mexican personnel who received US training and later formed the Zetas came from the Airmobile Special Forces Group (GAFE), which is considered an elite division of the Mexican military.

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