The composition of the garrison of Tangier varies significantly during the occupation, and the resources and tactics of the Moors changed.
The most easily accessed information about the forces involved in a range of encounters is
Tangier - The Earliest Battle Honour by John Hawkins - Pen & Sword
Another reliable, but somewhat less easily accessible source of information is
The English Garrison of Tangier by Andrew Abram - Helion
Well researched but very dated in approach and hard-going are -
Tangier, England's Lost Atlantic Outpost by EMG Routh - John Murray 1912
The History of the Second Queens Royal Regiment Vol.1 by LtCol. John Davis - Bentley & Son 1887
More difficult to find are individual C17th accounts such as
The Diary of Sir James Halkett - 1680
The Tangier Campaign by A J Smithers - Tempus Publishing - is poorly researched, contains numerous inaccuracies and gives the impression of being written 'off-the-cuff'.