Cullen makes a career out of turning societal norms on its head. He is also responsible for a project that advertised a baby doll with its own baby, and a billboard that read "Santa gives more to rich kids than poor kids."
See all of his work on his website, and see some of the projects below:
Rather than depict every soldier as immortal and heroic, Cullen's art shows the other side:
Courtesy of Darren Cullen
He has also produced a comic strip with a similarly satirical view toward warfare. Here's an excerpt.
Courtesy of Darren Cullen