1) Cavalryman 2) Combat occupation 3) Obsolete occupation 4) Trooper 
Cuirassiers (ər, from French cuirassier, pron) were mounted cavalry soldiers equipped with armour and firearms, first appearing in late 15th-century Europe. This French term means `the one with a cuirass` (cuirasse), the breastplate armour which they wore. The first cuirassiers were produced as a result of armoured cavalry, such as the man-at-a.....
• (n.) A soldier armed with a cuirass. • (n.) In modern armies, a soldier of the heaviest cavalry, wearing a cuirass only when in full dress.
French armoured heavy cavalry. The cuirass being a breastplate.
Cui`ras·sier' noun [ French cuirassier . See Curass .] A soldier armed with a cuirass. Milton. 
[n] - a cavalryman equipped with a cuirass
noun a cavalryman equipped with a cuirass
a cavalry soldier wearing a cuirass.