The systematic employment of slave soldiers was absent outside Islamdom, although slaves did sometimes fight for non-Muslims on an irregular basis.
islam
Bilal
Assuming that this slave converted to Islam in an Islamic Country, he would be a prime candidate for manumission (being freed from being a slave). While it is Islamic Law that a slave's conversion to Islam requires manumission, as a historical question, it was poorly enforced.
bilal
mamluks
yes they were very much
african slave us army soldiers
Janissary
Yes. They could convert to Islam, but this was generally discouraged by the slave-owners because it was seen as less legitimate to hold a Muslim as a slave than a Non-Muslim and slave-owners were generally opposed to the manumission of their "property".
A mameluk was a slave soldier who converted to Islam and served the Muslim caliphs and the Ayyubid sultans during the Middle Ages.
the use of slave soldiers by Americans.
he was a black slave that spoke in the Boston massacre. but he was killed by soldiers