Raju asked the soldier if he had won all the battles. This sentence can be changed into direct speech as:
1
Raju said to the soldier, "Has he won all the battles?"
2
Raju said to the soldier, "Could you win all the battles?"
3
Raju said to the soldier, "Do you win all the battles?"
4
Raju said to the soldier, "Did you win all the battles?"