Effective immediately, female Marines in grades E6 through E7 and O1 through O3, and female naval medical officers, chaplains and hospital corpsmen of the same grades, may be affiliated or assigned to select billets in certain 4th Marine Division and Force Headquarters Group units. See Marine administrative message 182/14 for more information. - Effective immediately, female Marines in grades E6 through E7 and O1 through O3, and female naval medical officers, chaplains and hospital corpsmen of the same grades, may be affiliated or assigned to select billets in certain 4th Marine Division and Force Headquarters Group units. See Marine administrative message 182/14 for more information.