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