He went to Radley (Social C under Evans) and was a keen oarsman, rowing at School and later at Henley for the London Rowing Club. He followed in his father’s footsteps and became an Electrical Engineer.
He was gazetted to the 22nd (County of London ) Bttn of the London Regiment (the Queen’s) in August 1914 at the start of the Great War. He was wounded in June 1915 at Ypres, in actions that saw the London Regiment Battalions in the thick of the fighting a taking a heavy toll. The Daily Sketch on 4 June 1915 reported that 11 officers were reported killed, 2 missing and 28 wounded, including Belshaw. The wider picture was that the previous day had seen 128 officers and 1752 men had been listed as casualties in France and Belgium alone (pg 2 column 3 below the fold). He was also Mentioned.
At his initiation in November 1917 he had recovered, been promoted Captain and appointed Adjutant of the 2nd Bttn The Rangers (gazetted April 1917). He returned to civilian life in the twenties, only to return to the Colours in September 1939 with the Pioneer Corps. He was promoted Major and Mentioned again.
He died in 1976.