Final answer:
In the military, a Navy Lieutenant is equivalent to an Army Captain, which is the rank achieved after First Lieutenant and just below Major.
Step-by-step explanation:
A Lieutenant in the Navy is equivalent to the rank of Captain in the Army. The ranks in the military are structured differently across various branches, and they can be equivalent even if they have different names. Being a military graduate with a lieutenant's commission suggests a significant achievement akin to an Army officer reaching the rank of Captain. This rank is above First Lieutenant and below Major in the Army, and it typically commands a company-sized unit of troops.