A suicide mission is a military operation in which few, if any, of the participants are expected to survive the mission. These are not to be confused with kamikaze attacks used by the Japanese during WWII, as the participants will certainly try to survive, even if they are unlikely to succeed.
In most cases, these missions have a goal that is considered important enough that achieving it is considered worth the loss of the personnel assigned to the mission. Given the low chance of survival, it is common to ask for volunteers to participate in the mission.
As it is expected that the personnel assigned will not return, the mission plans often do not include a plan for extracting the personnel, but most missions will at least have a contingency plan for their survival and rescue. The best historical example of a suicide mission would be the famous Doolittle Raid over Tokyo during WWII.
Suicide Missions in Fiction
- The attack on the Collectors in Mass Effect 2 was considered a suicide mission, and even literally called that.
- Frodo's journey into Mordor to destroy the Ring in The Lord of the Rings was considered a suicide mission.
- A suicide mission is the entire plot of the movie, The Guns of Navarone.
- The mission to destroy the shield generator in Return of the Jedi is easily a suicide mission.