A galea was a Roman soldier's helmet. Some gladiators, myrmillos, also wore a bronze galea with a face mask and a decoration, often a fish on its crest. The exact form or design of the helmet varied significantly over time, between differing unit types, and also between individual examples - ancient military equipment was not produced in assembly lines, but made by hand, so it is not certain to what degree there was any standardization even under the Roman Empire.