Hi Bert2368, 

 I noticed your comment in Nitroglycerin about the lack of a section dealing with its use in propellants. That's a good point and one I'd not noticed before. This use is well covered in smokeless powder, Poudre B, Ballistite and Cordite. You are welcome to add a new section, but I suggest you use:  and that way you only need to add a summary. The USA did not use nitroglycerin-based propellants in World War I and I got the impression the USA did not use them in World War II either, so its a relatively recent adoption (my lifetime anyway).