I want to know the answer to the following question:
When was the first 3.7 cm FlaK 18 introduced?
All the background I'm provided with is that "The first, the 3.7 cm FlaK 18 developed by Rheinmetall in the early 1930s, was basically an enlarged 2 cm FlaK 30.". Is that enough to answer the question?
Answer: no