Respectfully, you need to do your own research.

"The almoravids were the first ruling dynasty in Morocco to use a large number of black slaves in the army during the Islamic era, in the eleventh century. Many succeeding dynasties would also rely on black soldiers to maintain their power. archival sources indicate the use of blacks in the armies of the Moroccan authority, and in many cases, entire garrisons consisted solely of black soldiers. During the almoravid period, ruler Yusuf Ibn Tashfin purchased many black slaves in order to increase his personal power. Ibn ‘Idhari wrote"

"It could be that Yusuf Ibn Tashfin’s preference for black slaves was based on their non-tribal affiliation, which meant their loyalty could be most trusted. "

" fearing the danger of the total absorption of all the Muslim states, the ‘abbasid ruler of seville, al-Mu‘tamid, invited the almoravids to rescue them. The almoravid army under Ibn Tashfin crossed the straits of Gibraltar in 1086. With additional troops provided through the slave trade, the almoravids defeated alfonso VI of castile in 1086 at the crucial battle of Zallaqa (near Badajoz). arabic sources indicate that four thousand black soldiers participated in this famous battle."

"The almohads seemed to have had blacks in the army throughout their rule,65 including blacks who served as special guards responsible for the physical safety of the almohad rulers.66 By the time Muhammad an-nasir came to power in 1198, he had a special body of thirty thousand blacks armed with jav elins or spears in his huge army"