Ancient Roman military policy was to use battle exercises and individual personal exercises to keep the army fit for duty. Their leaders had the legions practice long marches, learn and maintain their expertise with their battle arms and build camps each night after a march. Discipline was key to a successful army and every sort of exercise, use of new artillery, and loyalty to their commanders, kept them battle ready.
Ancient Roman armies were called legions for a specific reason. In the days of the early ancient Roman republic, all property owning citizens were subject to be drafted into the military. The word legio meant "levy" of service or conscription or draft in our time. Thus those "legioed" formed legions.
Roman legions were not always at war. Much of their time was guarding the borders of the empire from other civilizations such as the Parthians or from tribal bandits. Within the empire any civil rebellions were crushed as fast as possible. Roman legions were constantly training for wars. This made them always ready for battle and kept their fighting skills well sharpened. The Roman navy kept the Mediterranean free of piracy. Also the legions had engineers among their ranks. Thus road & bridge building and maintenance was part of the duties of the legions.
The ancient Roman legions were almost always fighting inasmuch as the Roman empire was so vast, there was frequently a border problem or a revolt of conquered peoples that required the intervention of the legions. With this in mind, there many years in the duration of the empire where no major wars or battles were taking place. Rome was a successful empire largely in part to its military power. To maintain a military that was always ready for action, the legions did maneuvers, went on long training marches, practiced building their famous night encampments, patrolled the borders of the empire and did maintenance work on roads and bridges. The legions strengths were to always be ready for war even when no wars were in sight.
The ancient Roman legions were highly successful in wars that resulted in the expansion of the Roman empire. At its peak, Rome controlled most of the areas that bordered on the Mediterranean Sea and beyond that into Britain and Gaul.
Yes. The best known is the battle of the Teutoburg Forest in AD 9, when Germanic tribes practically wiped out three Roman legions.
Caius Flaminius was a Roman consul and general. He had tremendous success in ending rebellions in Gaul. He gave land from Gaul to Roman colonists. He met his death when Hannibal ambushed his legions at Lake Trasimene.
A man named Principes. The most famous and probably most significant reformer of the Ancient Roman legions was Marius. However, various other Roman leaders, including Emperor Diocletian and Eastern Roman Emperor Heraclius, also reformed the legions. As to reorganizations of non-Roman legions, I don't know.
Roman Legions were defeated in 378 c.e. by who?
To build bridges, fortifications, weapons, boats etc.
Fort Aliso was one of the forts of the remaining Roman legions stationed in Germania which were attacked after the coalition of Germanic tribes led by Arminius routed three Roman legions at the Battle of the Teutoburg Forest in 9 AD.
it might have been the Persians under xerxes, or the roman legions.
One can find a list of Roman legions from a variety of places. Wikipedia, UNRV History, Livius, The Org, and many other websites provide a list of Roman legions.