fired weapons that blow up close are called "proximity" weapons. came out in WWII if im not mistaken, they were also used in torpedos (i think), naval mines (again i think), artillery shells, and some others, mortars maybe? anywho, they had them in WWII, they work several ways, optical, radio, magnetic, not sure if theres more, brits came up with it, US worked the kinks out with the brits help, it was used in the battle of the bulge against the Germans through artillery, at least im pretty sure. would make for good BF42 addition, get busy iced!

ps, im pretty sure heat seeking came out much later.....
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