Original sentence: Over the next eight years he saw further service as a high lieutenant with the 2nd Marine Battalion at Kiel and Wilhelmshaven, and the 8th Grenadier Guards at Frankfurt (Oder)
Edited sentence: Over the next eight years he saw further service as a first lieutenant with the 2nd Marine Battalion at Kiel and Wilhelmshaven, and the 8th Grenadier Guards at Frankfurt (Oder)