iii. Co-operation with the other arms, and intercommunication

between the artillery brigade commander, his batteries and ammunition column, and also between the artillery brigade commander and the divisional artillery commander and subordinate infantry commanders.

3. If arrangements cannot be made to carry out tactical training with the other arms (_see_ Sec. =2= and T. and Man. Regs. Secs. =40= and =42=) the action and effect of those arms must be considered in the solution of tactical problems.

=10.= _Annual practice._

1. The object of the annual course of gun practice is two-fold, viz.:--