Which term encompasses explosives, NBC munitions, bombs, guns, and ammunition?

The term that encompasses explosives, NBC munitions, bombs, guns, and ammunition is "ordnance." This term refers to military supplies, particularly weapons, ammunition, combat vehicles, and maintenance tools, as well as the systems and materials designed for use with these weapons. It captures the broader category of items related to warfare and military operations.

While "munitions" is related and specifically refers to military weapons, ammunition, and equipment used in combat, it is not as inclusive as ordnance, which covers a wider range of items including explosive devices and their supporting equipment.

"Arms" typically refers to weapons that are specifically used in combat, and while it is a relevant term, it does not fully encompass the entirety of what ordnance includes, such as explosives and munitions used in various capacities beyond handheld weapons.

"Weaponry" generally denotes the collection of weapons available or used for military purposes but lacks the formal classification associated with ordnance, which is more specific to military logistics and supply chains. Therefore, ordnance is the most accurate term for the inclusion of all the mentioned categories.