'For conspicuous good work and devotion to duty during the period 18th September 1918 up to the cessation of hostilities on 11th November 1918 and afterwards. Lieut Jacob was in charge of a platoon during the advance in October and November 1918. He did exceptionally good work and handled his men well under fire. He frequently went forward immediately behind the infantry and made a personal reconnaissance of the roads thereby enabling his company Commander to get the company on to the job allotted to it without loss of time. He is a keen and reliable officer.'
Source: 'London Gazette'
Date: 3 June 1919