Green Lantern Corps, Volume 1: To Be a Lantern

Along with Hal Jordan, the daring test pilot who protects Earth as Green Lantern, there is an entire corps of Green Lanterns scattered across the galaxy, each defending their own homeworlds at the command of the powerful Guardians of the Universe.
Now, in the wake of events with tore the Lanterns asunder, the Corps lives again in these amazing new adventures brought to you by writer Dave Gibbons (WATCHMEN).
From the Guardians' citadel on the planet Oa, Green Lantern Guy Gardner, formerly of Earth, is assigned against his will to a feudal world of shadows and sudden death. Across the galaxy, new Lanterns discover what it means to wear the Corps insignia, as their courage is tested to the limit.

Collecting: Green Lantern Corps 1-6