'From the beginning of August 1918 until the 11th September 1918, this NCO commanded No 10 Platoon of the 12th Nelson Company and led his men in all the operations in which the Company took part during that period. In the attack on Puisieux the Sergeant had his Platoon in the Outpost line. He showed exceptional ability and coolness on this occasion, leading his men in the attack and choosing a good position for his outposts whereby he saved casualties and was able to send in much useful and correct information. In the operations on Bapaume front, commencing on 24th August this Non-Commissioned Officer again displayed marked coolness and skill in the handling of his men and it was largely due to his splendid example that the Platoon secured its objective with complete success. On the night 25th/26th August Sergt Henderson had charge of an outpost placed across the Bapaume-Baugnatre Road. On this outpost he furnished much invaluable information and took six prisoners and killed two of an enemy patrol which approached his post. On September 4th before Ruyaulcourt and on September 6th and 7th during operations in Havrincourt Wood this NCO showed at once marked personal leadership and very considerable tactical ability.'
Source: 'London Gazette'
Date: 13 March 1919