Roman soldiers wore:
A helmet (galea or cassis)
Greaves to guard the legs
One of three types of torsa armour: the lorica hamata (mail
armour), the lorica squamata (scale armour) or the lorica
segmentata (an armour with overlapping iron plates)
Arm protectors (manicae)
Heavily soled shoes/sandals (caliga).
A tunic
A sword belt (balteus)
Trousers in colder regions (bracchae)
Underpants (subligaria)
Groin straps overlapping strips of linen or leather that protect
the lower part of the body, sometimes a far down as the knees
(pteruges)
An apron: decorated metal plates in front of the groin which
protected against blows which might cut the belt.
A scarf to protect neck from helmet (focale)
One of two types of cloak, the sagum or the paenula
In cold climates Roman soldiers wore a hooded paenula. This was
a cloak which was like a poncho and normally did not have a hood.
It came in two parts sown at the front, so that it could be thrown
back to leave the arms relatively free. It was made of Gausapa wool
imbued with lanolin, an oil which made it water-resistant (paenula
gausapina). It could also be made of leather (paenula scortea)
which was suited for colder weather. Underneath, they wore a long
sleeved woollen tunic.
From the second century AD the paenula was also used by
travelling civilians for protection against cold and rain and could
come with or without a hood. It came to be used in the city of Rome
for the same purpose. The sumptuary law of 382 made it proper
everyday dress of senators, instead of the sagum.