Singh's father was a Lance Daffadar in the Hodson's Horse at the time of his birth, and retired as a full Risaldar in the Cavalry, serving for a time as ADC to a Division Commander. His grandfather Risaldar Major Hukam Singh served in the Guides Cavalry between 1883 and 1917, and great-grandfather, Naib Risaldar Sultana Singh, was among the first two generations of the Guides Cavalry enlisted in 1854; he was martyred during the Afghan campaign of 1879. Thus, after three generations of men serving in the lower and middle ranks of the army, Singh was to become the first member of his family to become a commissioned officer.