Berber Raiders

Overall strategy
Unlike the weaker but cheaper Berber Tribesmen, these raiders aren't simple peasants raised from the semi-civilised parts of Africa, but rather followers of an old way of life that predates all other foreign cultures - be they Carthaginian, Roman, German...or Arab for that matter - and that is hunting both animals and humans alike.

Thus, Berber Raiders can form a very important component of any Muslim army, being fast to train and equip, and having a rate of attack that makes them vastly superior to other javelin-armed units. Their own drawbacks are that they do not have armour, and that they are semi-mercenary units, requiring Wealth in addition to outlays in Timber and Food. Nevertheless, these units are ideal for cross-border raiding, or protecting your more valuable spearmen (and not to mention cavalry units, such as Ansariyun) from units such as Indian Longbowmwn or German Crossbowmen who unimpeded can kill off a good number of your Arab UUs in the field.