vehicles infiltrating or being air dropped. When the US Army asked for ideas, engineers at U.S. Army laboratories suggested the reverse-engineered and additional safety improvements of the East German AZ-58-K-100 HEAT anti-tank grenade that had been clandestinely obtained. This concept was called "HAG" for "High-explosive Antiarmor Grenade". While the civilian engineers working for the US Army thought it was a great idea, it was rejected out of hand by almost all senior US Army officers with field experience, who thought it would be more dangerous to the troops who used them than the enemy. The idea was quietly shelved by 1985. This decision left many rear-area U.S. units with no heavier "anti-tank weapon" than the M2 heavy machine gun. Modern usage The most widely distributed anti-tank grenades today are the post World War Two Russian designs of the 1950s and 1960s, mainly the RKG-3. During the Iran–Iraq War, the 13 year old Iranian soldier Mohammad Hossein Fahmideh was celebrated as a war hero after he blew himself up under an Iraqi tank with a grenade. Due to improvements in modern tank armor and the invention of rocket propelled grenades, anti-tank hand grenades are generally considered obsolete. However, in the recent Iraq War, the RKG-3 anti-tank hand grenade has made a reappearance with Iraqi insurgents who used them primarily against U.S. Humvees, Strykers and MRAPs, which lack the heavier armor of tanks. This has in turn led the U.S. to adopt countermeasures such as modifications to MRAP and Stryker vehicles by the fitting of slat armor, which causes the anti-tank grenade to detonate before coming in contact with the vehicle. The RKG-3 grenade has also be seen in use by the Aerorozvidka unit of the Ukrainian military in the 2022 Russian invasion of Ukraine. PJSC Mayak modifies the grenade into the RKG 1600 by changing the fuze timing and adding 3D printed fins to stabilise its flight when dropped from a commercial drone. References Anti-tank_weapons Grenades Infantry weapons