On 1 August Beck was transferred to duty in Alexandria never to return to Gallipoli. Beck invalided back to New Zealand on the RMS Tahiti 20 November 1915 and a medical board had found him "incapacitated for military duty" on 25 November 1915. On 16 February 1916 he transferred into the New Zealand Army Ordnance Corps on its formation. On 27 April 1916 he was struck off the strength of the NZEF and transferred to the reserve list of officers with the rank of captain. He then resumed his pre-war duties at the Northern District Ordnance Depot.
