Commentary First Group of Parts – Discipline Part 6 – Summary Hearing and Appeals and Review Section 148: Effect of substituted punishment
309.This section provides that unless the SAC directs otherwise, any punishment that it substitutes is deemed to have been awarded on the day that the CO awarded his punishment. The exception to this general rule is when the SAC awards a punishment of detention, in which case it may either direct that the punishment is to take effect at the end of any other period of service detention that has been awarded to the accused on a previous occasion, or it takes effect from the day on which the SAC awards it.