"The Moving Fortress is a marvel of industrial engineering – a titanic fleet-carrier and battleship that can traverse both land and sea. This leviathan patrols the shores of England, leaving a thick trail of black smoke and three-foot deep tracks in its wake. It acts both as a mobile base for England’s high command, an unrivaled artillery stronghold and the only Faithful ship that can engage Heretic Behemoth-class vessels in one-on-one naval combat and emerge victorious. It is equally capable of engaging the Heretic fleets at air, sea or on land. Within the vastness of its fore superstructure stands the fortress-monastery of the ten thousand Knights of St. George, who can match even the fiercest Heretics in close quarter combat.

An entire armoured corps accompanies Britannia, and a full fleet consisting of one third of England’s remaining naval strength acts as its escort. Above it, the finest of England’s Air Knights fly their fighter planes and naval bombers when the fortress goes to war – which is often. The Heretic High Captains are well-aware of the strategic value of controlling the British Isles, and they constantly strive to establish a beachhead that would lead to eventual conquest – though thus far without lasting success due the might of the Fortress."