Analysis of information sources in references of the Wikipedia article "Jade Helm 15 conspiracy theories" in English language version.
Local officials who have been briefed on the exercise say it is modeled after the French resistance to Nazi occupation during World War II. It calls for some military personnel to play the role of the occupiers and for others to work undetected as part of the resistance.
... some Jade Helm 15 participants "may conduct suspicious activities" as part of their training and others "will be wearing civilian attire and driving civilian vehicles."