Bullet shaped toy bomb/maybe trench art or a rocket

I bought a small box of toys and a daisy cork shooting rifle from the 50's at a yard sale. Inside the box were some toys and five bullet shaped bombs. The bombs are all metal and decent weight. They are about 1 and 3/4 inches long. Bullet shaped with four wings at the back. I did not find any markings on them. I am making the assumption that they were toys but they may be folk/trench art. I took a picture of the included toys in the hopes that it would date the aforementioned items but they could be from a different era. If anyone has seen items like these before, or know the age, type of bullet, whether or not they were toys or really anything about them, please let me know. Perhaps a link to a collector with such an item or a trench art page. I did a quick search when I bought them and came up empty so I leave it in your capable hands. Thanks so much for looking and again, any information would be helpful.