Going to have to pull you up there. Breitling specifically provided the on board chronometer for spitfires and other aircraft to the RAF throughout the 30s and 40s. I think the Navitimer came out in the early 50s and was a ground breaking "tool" watch at the time. You have to bare in mind that they were very much tool watches back then more than luxury pieces. They certainly weren't the first pilots watches but their aviation heritage is very much legitimate. Obviously now its all just marketing BS, the same as any luxury watch brand. To be fair to Breitling actually, they do still try to make modern relevant tool watches. That emergency one they have is a great piece of kit to have even now. I think someone on here actually has one.
Edit: Wibbs has jogged my memory there with his excellent depth of knowledge, it was made by Smith's. I remember handling it with interest before it was installed in the boat my father built, from whence it was later stolen.