That same year, the autogyro was employed by the Spanish military during the Asturias revolt, becoming the first military deployment of a rotocraft. Autogyros were also employed in New Jersey and Pennsylvania for delivering mail and newspapers prior to the invention of the helicopter. Though lacking true vertical flight capability, work on the autogyro forms the basis for helicopter analysis.
In that same year, the autogyro was employed by the Spanish military during the Asturias revolt, marking its first use in military operations involving rotorcraft. Autogyros were also utilized in New Jersey and Pennsylvania to deliver mail and newspapers prior to the invention of the helicopter. Despite lacking true vertical flight capability, research on the autogyro contributed to the understanding of helicopter design.