SECOND TRUMPET: AD 419 to AD 456
"Gaiseric, also known as Genseric, d. 477, was the founder of the VANDAL kingdom of North Africa. Gaiseric succeeded his brother Gunderic as king of the Vandals and Alans in 428. In 429 he led his people from Spain into North Africa, which he gradually conquered from the Romans, taking its chief city, Carthage, in 439. In 442 the Western Roman emperor Valentinian III recognized him as ruler of a kingdom that included most of what is now Tunisia and part of northern Algeria. In later years Gaiseric dominated the western Mediterranean with a powerful fleet, adding Sicily, Corsica, Sardinia, and the Balearic Islands to his conquests. He plundered Rome itself in 455 and in 468 defeated an expedition sent against him by the Eastern Roman emperor Leo I. The dynasty founded by Gaiseric lasted until 534."*
As you can see by the descriptive language of the Bible, this force was a sea power. Notice in the historical account given above that the Vandals were in control of the Mediterranean sea.