Third-Level Narrowing

You continue to survey general information sources on WWII weapons. You read a little bit on each of the above categories and decide that the one you are most interested in is artillery. OK, but what kind?

• Surface-to-air missiles (SAMS)?
• Machine guns?
• Anti-aircraft guns (Flaks)?

As you continue to poke around, you learn that air defense tactics and the various models of anti-aircraft guns were extremely critical in various battles, so you decide to focus on that.