Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Landing of the Romans
In the beginning of spring 563 the Roman staff arrived at Apollonia. The commander-in-chief was Manius Acilius Glabrio, a man of humble origin, but an able general feared both by his soldiers and by the enemy; the admiral was Gaius Livius; and among the military tribunes were Marcus Porcius Cato, the conqueror of Spain, and Lucius Valerius Flaccus, who after the old Roman wont did not disdain, although they had been consuls, to re-enter the army as simple war-tribunes.
They brought with them reinforcements in ships and men, including Numidian cavalry and Libyan elephants sent by Massinissa, and the permission of the senate to accept auxiliary troops to the number of 5000 from the extra-Italian allies, so that the whole number of the Roman forces was raised to about 40,000 men. The king, who in the beginning of spring had gone to the Aetolians and had thence made an aimless expedition to Acarnania, on the news of Glabrio's landing returned to his head-quarters to begin the campaign in earnest.
But incom prehensibly, through his own negligence and that of his lieutenants in Asia, reinforcements had wholly failed to reach him, so that he had nothing but the weak army--now further decimated by sickness and desertion in its dissolute winter-quarters--with which he had landed at Pteleum in the autumn of the previous year. The Aetolians too, who had professed to send such enormous numbers into the field, now, when their support was of moment, brought to their commander-in-chief no more than 4000 men.
The Roman troops had already begun operations in Thessaly, where the vanguard in concert with the Macedonian army drove the garrisons of Antiochus out of the Thessalian towns and occupied the territory of the Athamanes. The consul with the main army followed; the whole force of the Romans assembled at Larisa.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/3-09-war-antiochus-asia.asp?pg=20