One of the best illustrations of the expansion of the U.S. Navy between The Great War and the Second World War is to compare the uniform charts between the two.The illustration at the top of the page presents us with a snapshot of the officers from a coal and boiler navy. All of the basic warrant trades of an early navy are evident. The only symbol of technology are the Naval Aviator wings.
Compare this with the illustration below depicting the U.S. Navy of mid-WWII. The basic warrant trades are still evident, but now the submarine service is depicted as well as an expansion of naval aviation. Also of note are the many trades and specialties of the enlisted sailor. Some of the specialties that evolved during wartime are represented by simple letters in a diamond shape.
Necessity is the mother of invention. Dominance of the Pacific ocean could not have been contested without the advances in technology and organization represented by these badges.
As the adventure game expands, much of this newer technology, the airplane, the submarine, the motor torpedo boat, amphibious vehicles and landing craft, must all be accurately portrayed and incorporated.