The First Ogres' War is an event that occurred on ABC's Once Upon a Time.
- Numerous human soldiers
- Numerous ogre soldiers
- The first Ogres' War is ended by Rumplestiltskin when he becomes the Dark One and uses his newfound power to destroy the ogres on the battlefield, ensuring a victory for humankind.
- S1, E08: "Desperate Souls" (flashback)
- S2, E14: "Manhattan" (flashback)
- S6, E13: "Ill-Boding Patterns" (flashback)