The Military of ancient Rome relates to the Armed Forces of Ancient Rome from the founding of the city of Rome in the 8th century BC to the fall of the Western Roman Empire in the 5th century AD. Originally The Roman military consisted entirely of the Roman army, but a small navy was first added during the Samnite Wars and later significantly expanded. The Roman military was intertwined with the Roman state much more closely than in a modern Western nation. Josephus describes the Roman people as "as if born ready armed." and the Romans were for long periods prepared to engage in almost continuous warfare.
For a large part of Rome's history, the Roman state existed as an entity almost solely to support and finance the Roman military. The military's campaign history stretched over 1300 years
The War against Nabis or Laconian War of 195 BC was fought between the Greek city-state of Sparta and a coalition composed of Rome, the Achean League, Pergamum, Rhodes, and Macedon. During the Second Macedonian War (200–196 BC), Macedon had given Sparta control over Argos, an important city on the Aegean coast of Peloponnese. Sparta's continued occupation of Argos at the end of war was used as a pretext for Rome and its allies to declare war. The anti-Spartan coalition laid siege to Argos, captured the Spartan naval base at Gythium, and soon invested and besieged Sparta itself. Eventually, negotiations led to peace on Rome's terms, under which Argos and the coastal towns of Laconia were freed from Spartan rule and the Spartans were compelled to pay a war indemnity to Rome over the next eight years. Argos joined the Achaean League, and the Laconian towns were placed under Achaean protection. As a result of the war, Sparta lost its position as a major power in Greece. All consequent Spartan attempts to recover the losses failed and Nabis, the last sovereign ruler, was eventually murdered. Soon after, Sparta was forcibly made a member of its former rival, the Achaean League, ending several centuries of fierce political independence.
Marcus Ulpius Nerva Traianus, commonly called Trajan, lived from September 18, AD 53 to August 9, 117. He was a Roman Emperor from AD 98–117. He was the second of the "Five Good Emperors of the Roman Empire". From 101-102, and then from 105-106 he launched the Dacian Wars, ending with Dacia being added to the Roman Empire as yet another province. From 113-116, he led the successful invasions of Armenia, Persia, and Mesopotamia, bringing the Empire to its greatest territorial extent. He died soon after the invasions in 117, and his adopted son Hadrian took the throne. Soon after Hadrian took the throne, he lost most of the eastern territory, yet Dacia remained a Roman province.
Roman, remember that you shall rule the nations by your authority, for this is to be your skill, to make peace the custom, to spare the conquered, and to wage war until the haughty are brought low., Virgil, Aeneid
Alea iacta est (The die is cast), reportedly said by Gaius Julius Caesar before crossing the Rubicon
Silent enim leges inter arma (Laws are silent in times of war), Cicero
War gives the right of the conquerors to impose any conditions they please upon the vanquished. , Gaius Julius Caesar
The outcome corresponds less to expectations in war than in any other case whatsoever, Livy
A bad peace is even worse than war. , Tacitus
Veni, Vidi, Vici (I came, I saw, I conquered), Gaius Julius Caesar
I found Rome made of brick, I leave her clad in marble., Caesar Augustus