After six months of service as an Ordeal member and after fulfilling certain requirements, an Order of the Arrow member may take part in the Brotherhood ceremony, which places further emphasis on the ideals of Scouting and the Order. Completion of this ceremony signifies full membership in the Order of the Arrow.  Brotherhood is an opportunity for members to evaluate their past service to Scouting (camping and unit involvement) and to their lodge, and to reaffirm their belief in the high purposes of the Order.

Brotherhood      Order of the Arrow

Ordeal members are entitled to all the same rights and privileges of membership in the Order as Brotherhood and Vigil Honor members—there are no ranks within the Order. However, moving on to Brotherhood membership offers an opportunity "to reaffirm [one's] belief in the high purposes of the Order." Before becoming a Brotherhood member, each Arrowman makes a special effort to serve their troop. Each Brotherhood member commits to even more service to Scouting through the Order."