4. Among the chief duties of O.C. Batteries will be choice of observation stations. With this object, when required, the O.C. Battery will leave his Battery and observe fearlessly, keeping up communication with his Battery by telephone over the intervening space.
5. To prevent dust caused by discharge betraying gun positions, mats are to be spread under the muzzle of each gun.
6. During prolonged infantry encounters O.C.'s of Infantry Units will send officers to observe the effect of the Turkish Mountain Batteries and Austrian shells on the enemy's firing line.
H.Q. 1st Expeditionary Force,
July 9th, 1916.
ORDERS FOR ADVANCE FROM EL ARISH.
1. The regulations regarding the march have been explained in previous orders.
2. Fresh orders will be issued to the advanced guard on reaching the line Oghratina—Hod-el-Messia—Mugheibra and to the detachment proceeding to Bir-el-Abd.
The orders issued on July 8th, 1916, refer to the advance from El Arish.
THE MARCH.
1. The march under war conditions commences from El Arish, i.e. it being probable that hostile reconnaissances will be encountered, the advance must be effected with the necessary screen. There being a Turkish Detachment at Bir-el-Mazar, up to this point precautions need be observed. From Bir-el-Mazar the war zone commences. From this point it is necessary to separate the advanced guard and main body and send reconnoitring detachments ahead of the advanced guard.