Correct option is B
Sentence C introduces an important event where India and Pakistan signed the Lahore Declaration with the intention of promoting peace.
Sentence A follows the Lahore Declaration with the mention of the Kargil war, indicating a subsequent conflict between the two countries.
Sentence B provides additional context by mentioning that there were other violent wars in the past between India and Pakistan, showing a history of conflicts.
Sentence D explains a specific challenge faced by the Indian army during the engagements, emphasizing the difficult conditions they encountered.
The correct order (CABD) presents a coherent sequence of events.