Star Slammers is a great book from 1983. In this graphic novel, Walt Simonson brings us a story of interstellar mercenaries fighting for their honor and their lives against all odds.
This is another one of those great bits of 80's Space Opera where big guns, bright colors and ultra-fancy tech really shine. I cannot help but feel there are some similarities between the basic concept here and the Hammer's Slammers but then again, one could draw comparison to the Seven Samurai, even if there are only three Slammers.
The depictions of future combat in here are just so wonderfully over the top as to ring on a truly heroic level. Three heroes clad in what seems like power armor with big guns and even some gimmicky weapons (sling grenades!) take on an enemy much greater than themselves, laying low the forced of tyranny.
I can't help but think my friends and I tried playing this as an RPG when we were kids. If not, we at least borrowed content and inspiration for our sci fi games.