On the 11th January 1780, Galvez reviewed his army of 754 men before they embarked for Mobile, his regulars included;

Regiment of the Prince 43 men
Regiment of Havana 50 men
Regiment of Louisiana 141 men
Royal Artillery Corps 14 men

In addition to the Regulars his army included;

Carabiniers 26 men
Militia (White) 323 men
Militia ( Mulattoes & Free Black) 107 men
Anglo-American Auxiliaries 26 men
Slaves 24 men

Galvez sailed for Mobile on the 28th January 1780 with 745 men in 11 ships, his force included Spanish Regulars with white, mulatto and black militia units. The Regulars were from the "Regiment of the Prince", "Havana", "Louisiana" and the "Royal Artillery Corps". Among the militia units were 26 North Americans.

The ships were made up of;

A Merchant Frigate The "Volante" a Frigate
4 Settees The "Venezuela" a Galliot
A Packet boat The "Galvez" a Brig (privately armed as a corsair )
2 Brigs The "Kaulican" a Kings Brig

On the 10th February, the authorities in Havana sent Galvez reinforcements, this was made up of 567 men of the "Regiment of Navarra" in 5 ships.

Sources

The Spanish Conquest of British West Florida 1779-1781, by A. W. Haarman, pub. Florida Historical Quarterly, Vol. XXXIX, pp.116-17, citing "Bernardo de Galvez in
Louisiana 1776-1783, by J. W. Caughey, pub. Berkeley, Calif., 1934, pp.174-5.
Oliver Pollock; The Life and Times of an Unknown Patriot, by J. A. James, pub. New York & London 1937, pp.200.
British West Florida 1763-1783, by Cecil Johnson, pub. New Haven, Conn., 1943, pp.215.

More Spanish and British Units: American Revolution

1st Note: British at Pensacola
2nd Note: Spanish in Louisiana
3rd Note: Spanish at St. Louis
4th Note: British at Mobile
5th Note: Spanish at Mobile
6th Note: British Attack St. Louis
7th Note: Spanish Garrison of St. Louis
8th Note: Spanish "Regular" units in Louisiana and West Florida