Meantime Tudor had received the 62nd and 64th Brigades from the 21st Division as reinforcements, and contemplated a further attack upon Wytschaete. The 64th Brigade relieved the 26th, while the 1st and 2nd South Africans remained in line under the orders of the former Brigade. This plan, however, did not mature. During the morning of the 18th, under cover of mist, the enemy assaulted the position held by the 1st Regiment, and captured its advanced posts, one officer, Lieutenant Hogg, being killed, and 48 other ranks missing. Save for this incident the situation remained unchanged that day. On the 19th 100 men of the 4th Regiment were detailed to relieve some troops of the 19th Division. On the night of the 20th, the 4th was relieved in the southern part of the Vierstraat line and moved into support, while the detachment lent to the 19th Division rejoined its unit. Early on the morning of the 22nd the 1st and 2nd Regiments were also relieved and moved to Dickebusch, and on the 23rd the whole Brigade reassembled in the Hopoutre area. [Sidenote: _April 23._] It was clear that the reconstructed Brigade could not continue. The drafts received after the _débâcle_ of 24th March had been used up in the heavy fighting on the Messines-Wytschaete Ridge, and further reinforcements were not forthcoming to build it up to some semblance of fighting strength. No other course was possible but to organize the remnants into one battalion. The history of the doings of the South Africans in France is now the history of this composite unit, which was commanded by Lieut.-Colonel H. W. M. Bamford, M.C., of the 2nd Regiment, with Major H. H. Jenkins of the 1st as second-in-command, and Second-Lieutenant MacFie of the 4th as adjutant. The four companies were made up of officers, N.C.O’s, and men of the old regiments, and these, with the drafts arriving from England, brought the battalion to a total strength of 59 officers and 1,527 other ranks.