Complex sentence: While veterans from the "Florian Geyer" formed the nucleus of the division, the bulk of the soldiers were Magyar Honvédség (Hungarian Army) volksdeutsche conscripts, transferred to the Waffen-SS following an agreement between Germany and Hungary.
Split into simpler sentences: While veterans from the "Florian Geyer" formed the nucleus of the division, the bulk of the soldiers were Hungarian volksdeutsche. These men had originally been conscripted by the Magyar Honvédség, but were transferred to the Waffen-SS following an agreement between Germany and Hungary.