India 1921-1924

[Johnny]

Trying to find more information on my grand father, and weather he was in India 1921.
His name was George Hennry Driver
2nd Worc R Pte 11297 joined 12-8-1914
Then
R Barks R Sgt 5239164
His wife was Ellen Susan Driver and i found her on her return from Bombay in 1925 with her new baby born in to the army in Lahore India.
Just cant find what they where doing there.
Any Help Please
Regards
Johnny