The main parts used have been the bows wrapped in covers, arrow sacks and the arms holding or carrying bows. Adding these to plastic bodies from other Perry boxes is straightforward and has only needed the addition of some straps for arrow bags from putty - which has been done to the metal billmen too. The other conversion uses a pair of couched spear arms, with mail sleeves, from the Light Cavalry sprue to create a banner/flag bearer, who'll probably end up on a vignette base - not so easy to see as I've undercoated him, but I think it works as a decent pose.
All have plumes and orbs (from small beads) added to helms, to add some gravitas to their role as ducal bodyguards and they'll all wear tabards of St Andrew's cross and steel and flames, as per the sample figures I did some time ago. The conversions will be en route to Spain soon, to be painted for me.