What does Combat Training do in Dragonfire?

Combat Training increases the XP your dragons earn in PvE: +2.5%/level.

More XP = your dragons climb in Reign Level faster, and Reign Level sets the max army size plus the dragon's 4 stats. So it's an indirect progression multiplier.

Worth knowing: XP depends mostly on the type and level of the target. Basic bridge/tile defenders give little XP; wild dragons, Hedge Knights and high-level tiles give far more.

➡️ The winning combo: level Combat Training AND go for high-XP targets to level your dragons quickly early in a Reign.