structural:scholar_edition, structural:reformatting, linguistic:paraphrasing, structural:expansion
Influence on Rome

Alexander and his exploits were admired by many Romans, especially generals, who wanted to associate themselves with his achievements. Polybius began his Histories by reminding Romans of Alexander's achievements, and thereafter Roman leaders saw him as a role model. Pompey the Great adopted the epithet "Magnus" and even Alexander's anastole-type haircut, and searched the conquered lands of the east for Alexander's 260-year-old cloak, which he then wore as a sign of greatness. Julius Caesar dedicated a Lysippean equestrian bronze statue, but replaced Alexander's head with his own, while Octavian visited Alexander's tomb in Alexandria and temporarily changed his seal from a sphinx to Alexander's profile. The emperor Trajan also admired Alexander, as did Nero and Caracalla. The Macriani, a Roman family that in the person of Macrinus briefly ascended to the imperial throne, kept images of Alexander on their persons, either on jewellery or embroidered into their clothes.

On the other hand, some Roman writers, particularly Republican figures, used Alexander as a cautionary tale of how autocratic tendencies can be kept in check by republican values. Alexander was used by these writers as an example of ruler values such as amicitia (friendship) and clementia (clemency), but also iracundia (anger) and cupiditas gloriae (over-desire for glory).

Emperor Julian in his satire called "The Caesars", describes a contest between the previous Roman emperors, with Alexander the Great called in as an extra contestant, in the presence of the assembled gods.

The Itinerarium Alexandri is a 4th-century Latin description of Alexander the Great's campaigns. Julius Caesar went to serve his quaestorship in Hispania after his wife's funeral, in the spring or early summer of 69 BC. While there, he encountered a statue of Alexander the Great, and realised with dissatisfaction that he was now at an age when Alexander had the world at his feet, while he had achieved comparatively little.

Pompey posed as the "new Alexander" since he was his boyhood hero.

After Caracalla concluded his campaign against the Alamanni, it became evident that he was inordinately preoccupied with Alexander the Great. He began openly mimicking Alexander in his personal style. In planning his invasion of the Parthian Empire, Caracalla decided to arrange 16,000 of his men in Macedonian-style phalanxes, despite the Roman army having made the phalanx an obsolete tactical formation. The historian Christopher Matthew mentions that the term Phalangarii has two possible meanings, both with military connotations. The first refers merely to the Roman battle line and does not specifically mean that the men were armed with pikes, and the second bears similarity to the 'Marian Mules' of the late Roman Republic who carried their equipment suspended from a long pole, which were in use until at least the 2nd century AD. As a consequence, the Phalangarii of Legio II Parthica may not have been pikemen, but rather standard battle line troops or possibly Triarii.

Caracalla's mania for Alexander went so far that Caracalla visited Alexandria while preparing for his Persian invasion and persecuted philosophers of the Aristotelian school based on a legend that Aristotle had poisoned Alexander. This was a sign of Caracalla's increasingly erratic behaviour. But this mania for Alexander, strange as it was, was overshadowed by subsequent events in Alexandria.

In 39, Caligula performed a spectacular stunt by ordering a temporary floating bridge to be built using ships as pontoons, stretching for over two miles from the resort of Baiae to the neighbouring port of Puteoli. It was said that the bridge was to rival the Persian king Xerxes' pontoon bridge crossing of the Hellespont. Caligula, who could not swim, then proceeded to ride his favourite horse Incitatus across, wearing the breastplate of Alexander the Great. This act was in defiance of a prediction by Tiberius's soothsayer Thrasyllus of Mendes that Caligula had "no more chance of becoming emperor than of riding a horse across the Bay of Baiae".

The diffusion of Greek culture and language cemented by Alexander's conquests in West Asia and North Africa served as a "precondition" for the later Roman expansion into these territories and entire basis for the Byzantine Empire, according to Errington.