Japanese name suffices

See discussion for Reichu's note to editors.

Category 2

-sensei (先生)

Can be used for teachers, doctors, etc.

-sen/mpai (先輩)

"Senior", as opposed to kouhai, which means "Junior".

Category 3: Professional Titles

In alphabetical order. (Missing a few...)

-fukushirei (副指令)

"Sub/Vice/Deputy/Etc.-Commander".

-hakase (博士)

"Doctor" (Ph.D.).

-ichii (一尉)

"Major".

-kyouju (教授)

"Professor".

-sansa (三佐)

"Captain".

-shirei (司令)

"Commander".

References

If you put anything from Wikipedia here, you are already dead.