Reddit reviews Eye

Frank Herbert (Dune) had a series of short stories in the book Eye, one of which was very similar to this. I believe the story was called "The Coming of the Sword". Basically, mankind has been involved in a war for a long time when some guy on the front lines thinks of a way to make an energy field that detonates all explosives at range. His commanding officer pins him to a wall by his throat and snarls, "You stupid asshole. You haven't ended war! You've just made it personal!" Turns out that the entire scene is from a history book called The Coming of the Sword and it took place about five centuries earlier-- mankind has been fighting with hand weapons ever since.

This probably isn't the story you were looking for, but it might be in similar a genre.

Edited to provide link to book. (Sorry, no Kindle version, apparently.)

Two more gems worth keeping in mind: FH's short story (actually a pilgrimage manual, taking place around Children of Dune) "The Road to Dune" in eye and the famous Dune Encyclopedia. While neither is a full substitute for the mastery of the actual books, they both offer complementing (and in the latter's case, exhaustive) insights into the original Duneiverse that feels authentic and in the spirit of the books. Far superior, IMO, to any fanfic that followed...