5. The employment of wireless will be exploited to the full.
6. Popham panels will be employed for communication between Infantry and Aeroplanes.
Battle Instructions No. 4
ARTILLERY
(a) Ammunition will be dumped at or near gun positions as follows:
| 18-pdr. | 600 rounds. |
| 4.5" Howitzer | 500 rounds. |
| 60-pdr. | 400 rounds. |
| 6" guns | 400 rounds. |
| 6" Howitzers | 400 rounds. |
| 8" Howitzers | 400 rounds. |
| 9.2" Howitzers | 400 rounds. |
| 12" Howitzers | 200 rounds. |
Arrangements should be made to commence dumping this ammunition as soon as feasible. Echelons will be kept full.
(b) Boundaries between Corps as regards bombardment and counter-battery work coincide with the boundaries between Corps shown on map issued with Australian Corps "Battle Instructions No. 1," dated 1st August, 1918.
Battle Instructions No. 5
TANKS
1. Tanks are available as follows:
5th Tank Brigade.