Marine Corps University Communications Style Guide
PART THREE: GRAMMAR, MECHANICS, AND STYLE
Part three explains American English conventions for sentence-level grammar, mechanics, usage, and style. These include sophisticated use of commas and semicolons as well as writing in active voice. If you would like to test your knowledge of grammar and mechanics, you can take the Now You Try It! Quizzes found at the end of each section. These exercises provide good practice for all writers, and they can be a teaching and learning tool for students and faculty to use.