Historical: Reunification War provides an interesting description on the formation of the SLDF and the various Corps therein, and highlights that the basic unit formations that would still be in use at the end of the Star League were largely defined soon after the formation of the Star League, but that most wouldn't come into being in reality until after the Reunification War.
While Reunification War explains the SLDF definition of a Brigade and highlights the four Division types that were defined as the standards for Divisions, the Divisions described in the various theatres of the Reunification War are simply referred to with a number - 4th Division, 5th Division, etc. That makes sense given the contextual information that most Divisions were largely a mélange of combined-arms units during the war.
At the time of the Reunification War, the various Corps are all laid out in a consistent numerical order - I Corps contains the 1st Royal Division, 2nd Division and 3rd Division, II Corps the 4th - 6th Divisions, and so on. By 2764, all of the Divisions listed within the Star League sourcebook had specific types listed against them - such as the 4th Royal Infantry Division - and the seventy odd Corps of the Star League had a complete mix of divisional numbers within each Corps.
So, my long-winded question is: can the Divisions listed within the Star League sourcebook be traced back directly to those Divisions listed within Historial: Reunification War? Is it fair to assume that the 4th Division listed under II Corps in Historical: Reunification War went on to become the 4th Royal Infantry Division (The Gurkha Rifles) listed under LXIII Corps in the Star League sourcebook, for example?