Direct proof of use
The Oshkosh M-ATV was fielded in the Afghanistan theater by U.S. forces in 2009. Oshkosh announced on October 5, 2009 that the first MRAP All Terrain Vehicles were in Afghanistan, while a U.S. Army report from Kandahar Airfield recorded the first M-ATVs designated for southern Afghanistan arriving there on October 22.
Defense Department reporting described the M-ATV as a smaller and more maneuverable MRAP intended for Afghanistan's terrain and for roles including mounted patrols, reconnaissance, security, convoy protection, command and control, and combat service support.
Sources: Oshkosh First M-ATVs in Afghanistan, Army New M-ATV Arrives in Southern Afghanistan, DVIDS New Protective Vehicles Head to Afghanistan
Narrative
The M-ATV entered Afghanistan as a counter-IED and protected-mobility response to a terrain problem. Earlier MRAPs had demonstrated survivability value, but official sources described Afghanistan's mountains, unimproved roads, and cross-country routes as requiring a lighter and more mobile protected vehicle.
In Afghan service, the vehicle's documented role was not a single weapons mission. It was used as a protected carrier for troops and crews, supporting patrol movement, convoy security, reconnaissance, base and route security, command-and-control tasks, and support movement in restricted rural, mountain, and urban terrain.
The public record used here supports fielding, deployment, training, and mission-role claims by U.S. forces. It does not identify a specific engagement in which an M-ATV fired a weapon in Afghanistan, so the page treats the vehicle primarily as protected mobility and force-protection equipment.
Sources: DVIDS New Protective Vehicles Head to Afghanistan, Army New M-ATV Arrives in Southern Afghanistan, DOD Paxton Retirement Ceremony