The biggest fear of airplanes fighting against each other in air combat is getting their tails bitten off. Then why not arrange the machine gun at the back and sit a machine gunner behind it? It's bet

The biggest fear of airplanes fighting against each other in air combat is getting their tails bitten off. Then why not arrange the machine gun at the back and sit a machine gunner behind it? It's better than getting bitten and hanging, right? Think not. It's hard to mount a weapon that hits backwards, and even worse to mount a machine gunner, unless it's slow. (Like tanks, armored vehicles, that kind of can be), fighters are generally high-speed flight, and speed change unpredictable, high and low ups and downs, up and down. It's hard to align, plus the air resistance impact is enough to make you dizzy. Installed in front of the driver, or deputy driver by the driver control is much easier, and clear vision, as long as the stick to the back of the other side can be hit. Nowadays, air combat has missiles that automatically track the target and do not need to be counter-mounted.