OK, poster. You make a compelling argument — sign us up!
True, there will be obstacles: For one, the Martian corps that these recruitment posters from Kennedy Space Center are attempting to enlist us in does not exist. Also, as of yet, no human has ever stepped foot on the surface of the red planet, much less worked some kind of shadowy night-watch position, that (rather terrifyingly) appears to require the constant use of a space harpoon.
But, no matter! The can-do spirit of these WWI- and WWII-influenced posters has already inspired us. We will be teachers, and welders, and farmers, and satellite technicians, and guards against the Martian night-octopuses that presumably overrun its lunar plains. Just let us know when those enlistment rolls open up.
Full resolutions, suitable for printing on your own, are also publicly available right here.
All images via Kennedy Space Center