The Roman Legions were one of history’s most innovative military forces.  It was the Romans who created the idea of the professional army, organized it into separate units each with an identity, and crafted unit tactics that would emphasize unit discipline and training to maximum effect.  Roman legions had a uniformity to them to rapidly train troops effectively and equip them in such a way that would make it easier for them to be resupplied since every other legion had basically the same gear.  Each Roman legionnaire had the same kind of sword, notably the Gladius, unlike their enemies who often had a relative mish-mash of swords, spears, and other gear that made resupply and sustainment of troops in the field problematic.  To this end, Roman armor had to be standardized in a way that would account for the sheer variety of sizes and shapes of the men who would become legionnaires.  The Lorica Segmenta in Stainless Steel is an example of this philosophy.  This armor was highly protective of the shoulders, chest and abdomen, was light and flexible as suited Roman fighting techniques, and most importantly it was adaptable.  It could be given to another legionnaire and be fitted to him with little time and fuss, making equipping the legions easier to accomplish.  This innovation and others, such as the concept of total warfare and building roads, would make Rome the titular ruler of Europe for centuries.  The concepts and techniques developed by the Romans are applied and used by modern militaries around the world today.