Before Walter Simonson's work with Marvel and DC, there was Star Slammers, a series first devised by Simonson during his college days. The Slammers would later be resurrected as a Marvel graphic novel, and then a miniseries. Simonson describes it thus: Once upon a time, there was a race of men who could out-shoot, out-fight, and out-kill anybody. They were paid fabulous sums to act as mercenaries. The practice became so lucrative, they decided to go into business. They became the most successful businessmen in history, and they called themselvesThe Star Slammers!
Star Slammers: The Complete Collection HC
