| Author | Elizabeth Moon |
|---|---|
| Cover artist | Gary Ruddell |
| Language | English |
| Series | Familias Regnant; informally, Esmay Suiza trilogy |
| Genre | Space opera, Science fiction novel |
| Publisher | Baen Books |
Publication date | 1998; first paperback, November 1999 |
| Publication place | United States |
| Media type | Print (Paperback) |
| Pages | 497 pp, 1st paperback edition |
| ISBN | 0-671-57841-3 (paperback) |
| OCLC | 43109302 |
| Preceded by | Once a Hero |
| Followed by | Change of Command |
Rules of Engagement is a science fiction novel written by Elizabeth Moon.[1] It is the fifth in her Familias Regnant fictional universe. Following Once a Hero, it is the second novel in the informal Esmay Suiza trilogy; despite a major increase in focus on the character Brun Meager, Esmay Suiza still plays a major role.