You can acquire the Arma 3 Art of War Charity Pack on Steam. It includes a special Art of War Showcase mission where you can visit an in-game gallery.
You can visit the interactive gallery in the showcase mission to view contest-winning artwork.
All the artwork frames and canvases from the DLC are available as assets in the Eden Editor . You can place these and then use the setObjectTexture command to change the artwork or extract current textures for your own use.
If you are looking to turn this art into a physical "paper" (like a poster, brochure, or reference guide), the game allows you to export and retexture these assets: