All the following are from the Noun Project licenced under either Creative Commons or Public Domain
- Rifle by Rafiico Creative Studio from "https://thenounproject.com/browse/icons/term/rifle/" Noun Project (CC BY 3.0)
- Cannon by Andhika Pramanto from "https://thenounproject.com/browse/icons/term/cannon/" Noun Project (CC BY 3.0)