CBM is a network of camps or areas (currently 12 in the U.S.) of like-faith, mission, and purpose, which seek to evangelize and disciple through a combination of the following methods:
Classes (Released Time, after-school Bible clubs, Outdoor Education, Homeschool Enrichment, etc)
Correspondence Lessons (mailbox Bible program to disciple and help children earn camp discounts)
Camp (includes summer camp programming, as well as school-year retreats)
Conferences (making facilities available for churches/families/groups in the off-season)
Community (hosting events such as Pancake Suppers, Family Fun Days, Easter Sunrise Services, etc.)

The purpose of CBM is teaching the Bible, evangelizing the unreached, discipling believers, including school students and adults, encouraging and equipping them for active service for Jesus Christ in their community, local church and on to the world.