The Army calls these field rations Meals Ready to Eat, though Meals Rejected by Ethiopians or Meals Rejected by Everybody were more appropriate.

Meal, Ready to Eat; American field ration, assorted meals in ready to eat pouches. Long shelf life without refrigeration. Tastes as good as they sound.

Meal Ready to Eat (a Ration Pack)

Meals-Ready-To-Eat. Military combat rations. Come in plastic packaging.

meal(s), ready to eat

Meals Ready to Eat. They are made of meat that is too poor to be put into Spam, so they are also known as "Meals Rejected by Ethiopians". MREs also come in plastic bags, so they are not nearly as useful as the old C-rations which came in cans that could be used as coffee cups, stoves, alarms, booby traps, and whatever else an inventive soldier could jury rig.

Meal - Ready to Eat ( Web site) Food that is found as part of military Ration Packs or taken along to airsoft skirmishes, and does not require the usual levels of preparation.  While some MRE food is simply taken out of its package and eaten cold, there are other types of MRE (found now within the civilian market) that will cook / heat themselves before hand. Army MRE packs in the UK consist of mince meat, milk powder, tea bags, oats, chocolate powder, diuretic biscuits, and many other components.  Most military MREs are very high in energy, so for long term use, it is recommended you stick to civilian MREs if you're not going to burn the calories.

Meals Ready to Eat, packaged food carried by troops for their own consumption.