It is likely the Christian Crusades also include evangelizing the Muslims which was a fools errand. The Christian Crusades are most known for their want to capture and control the Holy Land. These Crusades are pretty much unjustifiable and they should never have happened, proof that religion does send people in the wrong direction at times.
The whole purpose of the Crusades was to eliminate the competition. The Catholic church saw the Muslim faith as a threat. Fortunately for the church, they had many battle savvy soldiers available to go and fight their battle. The unification under one fight kept much of the local fighting down, and was successful in at least thinning the numbers of Muslims that could empower Islam to become a dominant religion. Their efforts were in vain though. Islam has grown to be much larger than Catholocism and Christianity combined.
At the very least, the Christian Crusaders intended to evangelize some of the Muslims in the Holy Land. This goal was not mutually exclusive with their goal to also kill any Muslims that got in their way. The Christian Crusaders intended (and for some time succeeded) to establish a Christian kingdom in the Holy Land, and that plan did not include the genocide of all Muslims.
The Christian Crusaders did not intend to evangelize the Muslims in the Holy Land. In fact, they meant for them to be eradicated and demilitarized. This was a war of faiths that was very bloody, and one would never hope that the other side would become evangelized by war. The desire to survive evangelized them.