To celebrate the tenth anniversary of their SF Masterworks series, in early 2019 Gollancz launched a counterpart dedicated to older classics of science fiction: the Golden Age Masterworks. Of the initial tranche of books, Galactic Patrol by E.E. "Doc" Smith is one of the earliest. A very early example of space opera, the novel was originally serialised in six parts in the pages of Astounding magazine in 1937 and 1938.
A food engineer by trade - with a specialism in doughnut mixes, of all things - E.E. Smith was a fairly prolific author of science fiction. Galactic Patrol forms a part of his Lensman series, which had quite a complicated publishing history, not least because he later retrofitted an existing novel to serve as a prequel to this one.
Prolific author Alastair Reynolds is a major presence in the British science fiction scene, best known for his expansive Revelation Space universe which he has published since 2000. For its part, Slow Bullets is a standalone novella which exists outside Reynolds' various fictional universes - instead focusing on the unfortunate passengers of the "skipship" Caprice.
Formerly a luxury liner, the vessel has been retrofitted as a prison transport in the aftermath of an interstellar conflict between factions of humanity. Outside of a limited number of civilians, the Caprice mainly carries the "dregs" of the now-ended war: military criminals of all kinds, drawn from both the Central and Peripheral sides.