### Question
What does quadrennial defense review mean?


### Answer
**Quadrennial defense review** has the following meaning in *10 U.S.C. § 231*:

> the review of the defense programs and policies of the United States that is carried out every four years under section 118 of this title

#### Citation:
  - *10 U.S.C. § 231*
  - Heading: **Subtitle A-General Military Law > PART I-ORGANIZATION AND GENERAL MILITARY POWERS > CHAPTER 9-DEFENSE BUDGET MATTERS**

