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The Roman legionary was a professional soldier of the Roman army after the Marian reforms. Legionaries had to be Roman citizens under the age of 45. They enlisted in a legion for twenty-five years of service, a change from the early practice of enlisting only for a campaign. The last five years were on veteran lighter duties.
On the march in unfriendly terrain, the legionary would be loaded down with armour commonly lorica hamata, lorica squamata, or 1st-3rd century lorica segmentata, shield (scutum), helmet (galea), two javelins (one heavy pilum and one light verutum), a short sword (gladius), a dagger (pugio), a pair of heavy sandals (caligae), a sarcina (marching pack), about fourteen days worth of food, a waterskin (bladder for water), cooking equipment, two stakes (sudes murale) for the construction of palisades, and a shovel or wicker basket.
The Roman soldier underwent especially rigorous training; discipline was the base of the army's success, and the soldiers were relentlessly and constantly trained with weapons and especially with drill — forced marches with full load and in tight formation were frequent. Discipline was important and infractions were heavily punished by the centurions. However, honours, rewards and promotions were frequently awarded to legionaries who distinguished themselves in battle or through exemplary service.
Regular trained legionaries were known as milites and were the equivalent in rank of the modern private. Included in the ranks, aside from the milites, were the immunes, specialist soldiers with secondary roles such as engineer, artilleryman, drill and weapons instructor, carpenter and medic. These men were still fully trained legionaries, however, and would fight in the ranks if called upon. They were excused from some of the more arduous tasks such as drill and fatigues and received better pay than their comrades in arms.
Other legionaries 
Legionary is also a term used for members of other legions, like French Foreign Legion, Spanish Foreign Legion or Polish Legions. Members of these modern legions are often called légionnaires, the French term for legionary. The term was also used by the Romanian far right paramilitary group known in English as the Iron Guard.
See also 
- List of Roman army unit types
- Military history of ancient Rome
- Foreign legions
- Roman camp
- Roman Republic
- Roman Empire
- Punic wars
- List of Roman legions
General books 
- Sumner, G. and Raffaele D'Amato. Arms and Armour of the Imperial Roman Soldier. Frontline Books, 2009.
- Watson, G.R. The Roman Soldier. Cornell University Press, 1993.
Children's books 
- Matyszak, Philip. Legionary: the Roman soldier's (unofficial) manual. Thames & Hudson, 2009.
- Cowan, Ross, and Angus McBride. Roman Legionary: 58 BC - AD 69. Osprey Publishing, 2003.
- The Roman Recruit looks at the life, duties and equipment of a Roman legionary (c. 200AD)