The same day embarkation commenced on to H.T. Karroo at Alexandria, and on the 9th, under escort of two destroyers, the Karroo sailed for Mudros, arriving on the evening of 12th October. The following officers did not accompany the Battalion to Mudros:
Capts. G. H. Moore and H. Parkhouse (seconded for duty, in the Censor's Office, Cairo).
Lieut. H. W. Dennis (granted leave to England) and 2/Lieut. F. R. C. Bradford (in hospital).
For two days the Battalion remained on board in Mudros Harbour, but on the 15th was transhipped to H.T. Sarnia, which put to sea about 3 p.m. At midnight the transport anchored off Cape Helles and the Battalion disembarked on to the Gallipoli Peninsula at W. Beach and bivouacked in dugouts in the early hours of the 16th October 1916.
The Battalion was now attached to the Royal Naval Division, the infantry of which consisted of the following units:
| Major-Gen. A. Paris, C.B. | ||
| 1st Brigade—Brig.-Gen. David Mercer, C.B. | ||
| "Hawke" | Battalion. | |
| "Drake" | " | |
| "Hood" | " | |
| "Nelson" | " | |
| 2/3rd London Regiment. | ||
| 2/4th London Regiment. | ||
| 2nd Brigade—Brig.-Gen. C. N. Trotman, C.B. | ||
| 1st Royal Marines. | ||
| 2nd Royal Marines. | ||
| "Anson" | Battalion. | |
| "Howe" | " | |
| 2/1st London Regiment. | ||
| 2/2nd London Regiment. | ||
The Division was attached with the 42nd (South Lancashire) and 52nd (Lowland) Territorial Divisions to the VIII Corps (Lieut.-Gen. Sir Francis Davies, K.C.B.).
The 2/4th Londons landed on the Peninsula at a critical period in the fortunes of the expedition, and in order to render clear the position of affairs in the middle of October, some reference is necessary to the course which events had taken since the inception of the campaign.