The Imperial Military Stop Loss Order, abbreviated IMSLO, was a retroactive Imperial directive. It mandated that all beings conscripted into military service be required to stay in service as long as the Empire wished it. Skilled specialists, and doctors in particular, were often retained in Imperial service under the IMSLO.
Some unhappy members of the Imperial Military, affected by the IMSLO, created a backronym: "I'm Milking Scragged; Life's Over."
- The Complete Star Wars Encyclopedia