Complex sentence: In 1963 the Royal Mine-watching Service assumed a new role and name with responsibilities to provide staff to support the Navy in the various Ports Headquarters around the UK that would be set up in a National Emergency or war.
Split into simpler sentences: In 1963 the Royal Mine-watching Service assumed a new Role and Name. With responsibilities to provide staff to support the Navy in the various Ports Headquarters around the UK that would be set up in a National Emergency or war.