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
A sortie was attempted; but the Romans repelled it with ease and, without taking time to open a regular siege, began the assault on the landward side. Eagerly the assailants pushed their advance along the narrow land approach to the town; new columns constantly relieved those that were fatigued; the weak garrison was utterly exhausted; but the Romans had gained no advantage. Scipio had not expected any; the assault was merely designed to draw away the garrison from the side next to the harbour, where, having been informed that part of the latter was left dry at ebb-tide, he meditated a second attack.
While the assault was raging on the landward side, Scipio sent a division with ladders over the shallow bank "where Neptune himself showed them the way," and they had actually the good fortune to find the walls at that point undefended. Thus the city was won on the first day; whereupon Mago in the citadel capitulated. With the Carthaginian capital there fell into the hands of the Romans 18 dismantled vessels of war and 63 transports, the whole war-stores, considerable supplies of corn, the war-chest of 600 talents (more than; 40,000 pounds), ten thousand captives, among whom were eighteen Carthaginian gerusiasts or judges, and the hostages of all the Spanish allies of Carthage.
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Reference address : https://www.ellopos.net/elpenor/rome/3-06-war-hannibal-cannae-zama.asp?pg=41