I'm not entirely sure specifically as I haven't read every story in it. But generally, in Black Library works, there could be tales of heroic battles, epic quests, and the struggles of different factions in the Warhammer universe.
One interesting Black Crusade story could be about a lone Chaos Space Marine who manages to infiltrate an Imperial stronghold. He uses his wits and the powers granted by the Chaos Gods to cause chaos within. Another might involve a group of heretics banding together during a Black Crusade, each with their own motives for following the path of Chaos. There are also stories of battles where the forces of Chaos face off against the Imperium in epic and brutal confrontations during the Black Crusade.
A story where a group of Black Crusade players managed to turn a previously loyal Imperial world into a Chaos - ruled hellhole. They did it by manipulating the planet's religious leaders and causing civil unrest. It was memorable because of the elaborate schemes they used, like spreading false prophecies and causing famines to make the people lose faith in the Emperor.
Some stories could revolve around the discovery of ancient artifacts during the Crusade. These artifacts might hold great power or knowledge. A group of adventurers might stumble upon an ancient tomb or a lost temple filled with these relics. Their journey to understand and utilize these artifacts, while fending off those who would steal or misuse them, can be a fascinating story full of mystery and danger.
In some Black Crusade stories, we see the internal politics and power struggles within the Chaos legions. For example, different warbands might compete for resources or try to gain the favor of a powerful Chaos lord. A particular warband might try to complete a specific mission during the Black Crusade to prove their worth, but they face betrayal from within their own ranks as another warband tries to undermine them for their own gain. This complex web of relationships and betrayals makes for very engaging stories.
Sure. There's a story about a novice Chaos follower in a Black Crusade. He is just starting to understand the powers of Chaos. He gets involved in a small skirmish against an Imperial outpost. It's a simple story that shows the basic elements of a Black Crusade like the chaos vs order dynamic. Another one is about a young warband's first major engagement during the Black Crusade. It's not too complex and gives a good overview.
There could be a story where a group of Black Crusade warriors uncovers an ancient and powerful artifact. This artifact could be a weapon or some kind of relic with the potential to change the balance of power in the ongoing war. They then have to fight off other Chaos factions as well as Imperial forces who also learn about the artifact. The whole process involves a lot of battles, betrayals among the Chaos ranks, and unexpected alliances.
One interesting story could be about a Chaos Space Marine who starts as a low - ranked follower but through a series of dark deeds and battles, he rises in power. He manages to steal an ancient and powerful artifact from a loyalist stronghold, which earns him great favor among the Chaos Lords.
The main themes often include chaos, war, and the struggle between good and evil. The novels typically depict the brutal and unending conflict that is characteristic of the Black Crusades.