—Act III, scene v, line 6

Actually, it is a new war, begun after Octavia has brought about the meeting at Tarentum and the reconciliation.

On July 1, 36 b.c., Agrippa's new fleet set out in three squadrons, Agrippa at the head of one, Octavius of a second, and Lepidus of a third. For two months these ships and those of Sextus met, with victory usually resting with Sextus. At one point, Octavius' squadron was nearly wiped out.

Finally, on September 3, 36 B.C., Sextus was forced to accept battle with Agrippa near the Strait of Messina, which separates Sicily and Italy. This time Sextus was defeated by sea and land, and his power was utterly destroyed. He managed to get away himself and fled eastward, hoping to find safety with Antony.

Antony could now see into what catastrophe Octavia's mediation had led him. Octavius Caesar had beaten Sextus and Antony had lost his chance to make vigorous war against Octavius in combination with Sextus. Making that same war without Sextus and with Octavius equipped now with a victorious navy was another, and worse, matter altogether.

Nor was this the full extent to which matters had turned against Antony. Eros has more news, about Lepidus:

—Act III, scene v, lines 7-13

What happened was that after Sextus Pompeius was defeated, Octavius Caesar added all the conquered areas (Sicily, Sardinia, Corsica, and so on) to the provinces controlled by himself. Lepidus, who controlled only Africa, felt that since he had shared in the fighting, he ought to get some of the loot. This Octavius Caesar refused ("would not let him partake in the glory of the action").

Lepidus attempted to use force but this Octavius Caesar scotched at once. He entered Lepidus' camp with a small body of troops, sure that Lepidus' portion of the army would not support their general (probably he had made arrangements with Lepidus' troops in advance). He was right. Lepidus' men deserted him.

Lepidus was therefore demoted from his triumviral status and Africa was taken from him. He was not imprisoned, however, for he was not that dangerous. He was sent back to Rome and was allowed to keep the purely honorary title of Pontifex Maximus ("high priest"), in which role he had many harmless duties to perform. He kept the job for the remaining quarter century of his life and never bothered anyone again.

Octavius Caesar is now without a rival in the West. He rules all the provinces and is stronger than ever before. Antony, who had lost his chance for effective military action, can now only rage. Eros describes his actions:

—Act III, scene v, lines 17-20

Sextus Pompeius, fleeing from the lost battle near Sicily, had gone first to the Aegean island of Lesbos, and then to Asia Minor. There he had been taken by a contingent of Antony's troops, and the officer in charge, assuming him to be an enemy, killed him. That was the end of Sextus Pompeius, just three years after he might have been the lord of all the world by merely cutting a hawser first and then three throats.

The officer who killed Sextus had acted hastily, however. He still had his name and he might have been a most useful pawn to Antony against Octavius. Now he was gone and Antony could only curse the excess zeal of his own loyal officer.

The situation in 36 b.c., then, was this. From a quadrumvirate there had come a diumvirate-two men, Octavius Caesar and Mark Antony.

The disappearance of the other two, Lepidus and Sextus, had resulted in their strength being added entirely to that of Octavius.

Between the scene just described and the next, there is a historical lapse of two years, which Shakespeare passes over in silence, though they are eventful.

For one thing, Antony, thoroughly disillusioned with the political effect of the marriage with Octavia, left her. The marriage had served Octavius Caesar's purpose only.

In 36 b.c., therefore, he left Athens and returned to Alexandria. He abandoned Octavia and returned to Cleopatra, whom he had not seen in three years. He was forty-seven years old now, and she was thirty-three, and from this point on to the end of their lives, nothing came between them.

Of course, there were still world affairs to deal with. Antony could expect no further agreements with Octavius Caesar. There was going to be war as soon as one or the other felt strong enough to push it.

Antony wanted the strength and to get it he turned and pushed against the Parthians. In a way, this was wasteful, for Antony was turning away from the main enemy (at the moment) and expending energy on a lesser foe. Perhaps we can see his reasoning, though…

Octavius Caesar had won considerable military prestige through his victory over Sextus (even though the credit belonged to Agrippa), and since military prestige was Antony's chief stock in trade he had to balance that gain somehow. The Parthians were still reeling from Ventidius' strokes and might be an easy prey. Then too, once they were beaten, Antony could face westward without having to worry about his rear.

Without provocation, then, Antony opened a campaign against the Parthians and proceeded to do what Ventidius had refused to do. He pursued the Parthians deep into their own fastnesses.

For his pains, he was trapped in the mountains and was able to escape only with the loss of more than half his army. It was almost as bad a defeat as Crassus had suffered and only the fact that he himself did not die as Crassus had done obscured the fact.

The next year, 35 b.c., he tried to retrieve matters by attacking Armenia, a much weaker adversary than Parthia. Here he won, capturing the King and bringing him back to Alexandria, where he celebrated a mock triumph. (A real triumph would have had to take place in Rome.)

Antony had returned to Alexandria with his military reputation much tarnished as a result of his Eastern adventure, rather than made glistening as he had hoped. Had he come back an easy and glorious victor over Parthia he might well have turned against Octavius at once. As it was, he seems to have decided in favor of settling for half.

He would build an Eastern empire about Egypt as a base and with Alexandria as its capital. He would assume a defensive stance and await events. In doing so, however, he could not help assuming the posture of an Egyptian king.