From right to left

1. A centurion in subarmalis, padding usually worn under armor; and wearing phalerae, medals for military service.

2. An aquilifer (legion standard-bearer) in a cavalry mask, wearing lorica hamata (chainmail)

3. A signifer (century standard-bearer) in lorica segmentata (plated armor) and wearing a wolf pelt.

4. A bugler in a bear pelt?

5. Ordinary Roman legionaries in lorica segmentata

http://legioxv.org/galerie/

How did we get photos from the 1st-2nd century AD? /s

First guys helmet seems incorrectly sized imo.