 Complete the following phrase:  The regiment sailed for war on 19 October 1914 and arrived in Egypt on 10 December. When the rest of the division departed to take part in the Gallipoli, the light horse were left behind the authorities under the belief that mounted troops would not be needed in the campaign due to the terrain. However, infantry casualties were so severe it was decided to send them, without their horses, as infantry reinforcements. The regiment landed at what became known as 