The original series was first published in 1971-73 by Time-Life in association with the BBC. The series was later re-issued by Orbis. The material is much the same but the order of presentation varied slightly, with changes to the magazine cover in some cases, in particular the pictures on or inside the rear cover.
As was common with these series the page numbers follow sequentially once the cover has been removed and bound to resemble an encyclopedia. The covers often contain fascinating imagery and sometimes features on British Military Uniforms.
As the series was intended to be bound, issues without covers are more readily available.