There was the squadron of Portugal, consisting of ten galleons, and commanded by the captain-general, Medina Sidonia.

In the squadron of Castile were fourteen ships of various sizes, under General Diego Flores de Valdez.

This officer was one of the most experienced naval officers in the Spanish service, and was subsequently ordered, in consequence, to sail with the generalissimo in his flag-ship.

In the squadron of Andalusia were ten galleons and other vessels, under General Pedro de Valdez.

In the squadron of Biscay were ten galleons and lesser ships, under General Juan Martinet de Recalde, upper admiral of the fleet.