Which type of ammunition is not associated with the explosive class/division categories?

Fireworks are not categorized under the same explosive class/division categories typically applied to other types of ammunition like rockets, small arms ammunition, and mortars. While fireworks can produce explosive effects, they are generally regulated under a different framework that focuses on consumer safety and entertainment purposes rather than military or industrial applications.

In contrast, rockets, small arms ammunition, and mortars all fall under specific classes of explosives used in military and defense contexts. These types of ammunition are classified based on their potential hazards, which include factors such as the nature of the explosive, propulsion, and fragmentation characteristics. This classification is crucial for safety, storage, transportation, and handling in operational environments.

Therefore, the distinction lies in the regulation and classification systems different types of munition are subjected to, with fireworks occupying a separate regulatory category focused on consumer use, rather than the professional handling and operational uses associated with military explosives.