 Complete the following phrase:  The convoy of troopships arrived at Alexandria on 25 September, and the divisional RE moved to Cairo, where the Signal Co set up communications for the Cairo defences and trained infantry signallers. Two cable detachments ran a line from Kantara to Ismailia, which was very important when the Suez Canal defences were attacked the following year. Early in 1915 the signal establishment was increased to provide a section for the divisional artillery HQ, another cable detachment and additional motor cycle despatch riders, bringing the company strength up to 208. All the other ranks ORs in Nos 24 Sections were transferred from their infantry regiments to the RE. The divisional RE was withdrawn for training after Christmas, but returned to the canal defences when the Turkish Army carried out a 