Battlefleets of Sector Six: Ships of the 4th Reich
Previous to the Siege of Rentlaw Prime, the 4th Reich had never shown real naval strength beyond individual ships and small raiding squadrons. In fact it was the engagements against the RS Drache (see "Voyages of the Mary Shelly") that the first capital ship was known to have been deployed by the Reich.
With the capture of the Imperial Titan Legion (renamed the "1st Titan Army" by the Reich, see "The Rise of Tyranny" Campaign) on Xochoi, all that changed. Always adept at technical challenges, the Reich was very quickly able to reverse engineer the weapons technology of the captured Titans and the ability to manufacture the various types of massive ordnance was realized.
After the ceasefire, construction practices for ship hulls to carry these various types of massive ordnance followed. After 5 years of peace, the "HimmelWaffe" (Heaven Force) is ready to crush the Imperials and their allies and drive them from the Rentlaw SubSector once and for all.