Infantry platoons bristle with direct-fire weapons, but everyone loves a grenade. Grenades give ground troops the ability to send a big boom of fire and shrapnel over a wall or hedgerow, inside a window, or wherever else you can wing one. The catch, of course, is that a hand grenade’s range tops out at roughly 40 meters, depending on whether the grenade-hurler tried out for the minors before joining the military.