The Knights Templar is a branch of Masonism that is considered to be part of the York Rite. Unlike the other bodies in the rite (Speculative, Capitular and Cryptic), the Chivalric body, which includes the Templars, requires you to pledge allegiance to a specific faith to become a Knight's Templar. To even be considered for inclusion in this order, you must be a Master Mason in good standing with any of the bodies.
Join a Masonic order as an apprentice and begin to follow its studies.
Achieve the rank of Mark Master. A Mark Master is a Mason who has mastered the lessons of regularity, discipline and integrity as taught in your order or body.
Master the next level within your order or body, the Past Master. The degree of Past Master shows that you have mastered an understanding of harmony as defined by the Masons. It is a ceremonial degree which maintains a tradition and does not have as much to learn in it as the other degrees. Much of this degree involves learning about the role of the order and its relation to Solomon's Temple.
Begin your Mark Master degrees. This course of study will introduce symbolic lessons on the meaning of the host and the sacrament within the Temple.
Advance to the Most Excellent Master degree, which builds on the Mark Master's symbolic lessons but has a great focus on the consecration and descent of the Host into the Temple. The acts of consecration and the host are specifically as defined by the Christian faith.
Contact your local order of the Knight's Templar to apply for membership. Its membership rites are closely guarded secrets, but be prepared to attest and prove your adherence to the principles of the Christian faith.
If you do not know or have any local Knights Templar in your area, contact the Grand Encampment of Knights Templar by phoning (713) 349-8700.
The American Knights Templar is viewed as a paramilitary religious organisation by most other bodies and degrees within the American Masonic Society. The English version is not; make sure you fully support its views before pledging membership.