Complex sentence: Previously, the the "Scuba Diver" badge was awarded in two degrees--one for officers, one for enlisted men; the Navy eliminated the officer's badge in the 1990s, yet it remains in service within the Coast Guard.
Split into simpler sentences: Previously, the the Scuba Diver badge was awarded in two degrees--one for officers, one for enlisted men. The Navy eliminated the officer's scuba diver's badge in the 1990s, yet it remains in service within the Coast Guard.