Complex sentence: He was actively associated with the 1961 Goa Liberation Operations, and during the 1971 Indo-Pak war his ship was in the escort groups for missile boats responsible for humbling the adversary.
Split into simpler sentences: He was actively associated with the 1961 Goa Liberation Operations. During the 1971 Indo-Pak war his ship was in the escort groups for missile boats responsible for humbling the adversary.