Meet the WWI women who pretended to be rocks for the war effort

The Women's Reserve Camouflage Corps were a group of 40 woman artists from NYC and Philadelphia ("in perfect physical condition") who devised camouflage systems for fighters and materiel during WWI, testing their theories by hiding in Van Cortlandt Park in the Bronx -- where the local cops grew accustomed to having seeming rocks and trees spring to life as they passed.

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