Only the veteran heavy cavalry can upgrade to light cavalry in Napoleonic Age? Why?

Question

If an Napoleonic Cuirassier want to promote into Hussar, do he need to be a veteran? And why not hussar, dragoon, carabinier, and lancer are not protected by cuirass or armour like cuirassier? I think the higher the the rank of somebody, the more essential it need to be protected, isn't it?

Answer 1

the type of cavalry someone is depends on armor and weapons...Lancers and Hussars are "light" cavalry because they are armed with spears or swords,and ride light with no armor...by saying they "need" more armor is saying they shouldnt be light cavalry.....most members stayed with their regiments,and therefore to type,for their entire career...they didnt jump around between different types...