This first volume in the Defense Language Institute's 12-week course in Japanese presents an introduction to Japanese phonology for the non-linguist beginning student, and a description of the format used throughout the DLI series (perception drills, dialogues with English equivalents, grammar notes, and exercises and conversations). This volume also contains Lesson Units 1-15. All Japanese appears in romanization. (See AL 002 224 for Volumes II and III--Lesson Units 16-41, and AL 002 225 for Volume IV--Lesson Units 42-55, and Volume V--Glossary.) (AMM)