Ordnance Development Division News Today

Emma Unson Rotor worked on the proximity fuze, a groundbreaking piece of World War II weapons technology that the U.S. War Department called “second only to the atomic bomb.”

Emma Rotor played an important role in the development of the first-ever smart weapon. In the history books of World War II, several inventions often take center stage.

Devoted wife of a famed Filipino writer, Emma Unson Rotor worked on the proximity fuze at a U.S. agency in the 1940s.