This operation must have required consummate skill and coolness; the financial problem alone must have been serious; it was, however, rendered much easier by the departure of Antonius to the East; to the Roman soldiers, as to ourselves for many centuries, the East was the El Dorado, and service or even settlement in Italy presented small attractions to the legionary compared with service on the Euphrates; the gold which had tempted Crassus still glittered in the imagination of the centurions. Octavian and his advisers were glad to see the more restless spirits stream after Antonius, it lightened their burden. Meanwhile Octavian had the good fortune to find a War Minister of rare genius and unexampled personal devotion; if the career of Octavian is marvellous, that of his friend Agrippa is no less so; the two men were of the same age; they were fellow students at Apollonia when the death of Cæsar summoned Octavian to Rome; they had already laid the foundations of a friendship which is among the most noteworthy in history. Agrippa as a military genius has received scant consideration; but the man must have been a genius, who at the age of twenty-seven made a navy for Rome and re-organized an army, and who further contrived to place that army on a footing, which restored it to its proper position of subordination to the civil administration. All Agrippa’s projects bear witness to the mind of a daring planner and a consummate master of detail. It was necessary to build and train a fleet in the face of the opposition of Sextus Pompeius, who held the command of the sea; Agrippa at once bethought himself of an inland lake in which his ships could be built and then manœuvred; when the work of preparation was complete he cut a channel into the Mediterranean, and sailed out to attack and defeat his enemy. In preparation for the subsequent operations against Antonius at Actium, he was not misled by the example of the naval experts of the day; he saw that rapidity of manœuvring was more important in a man-of-war than size and weight, and instead of competing with the ship builders of Alexandria, constructed a large number of light galleys, and manned them with skilled crews. The one great building for which Agrippa was responsible survives to our time, and still testifies to the originality of his genius; the dome of the Pantheon is remarkable even now; in its own day it was unexampled.