rescue, deliver, redeem, ransom, reclaim, save mean to set free from confinement or danger. rescue implies freeing from imminent danger by prompt or vigorous action. rescued the crew of a sinking ship; deliver implies release usually of a person from confinement, temptation, slavery, or suffering.
legionnaire - a soldier who is a member of a legion (especially the French Foreign Legion) legionary. legion - a large military unit; the French Foreign Legion. France, French Republic - a republic in western Europe; the largest country wholly in Europe.
Legionnaires' disease is a type of pneumonia caused by bacteria. You usually get it by breathing in mist from water that contains the bacteria. The mist may come from hot tubs, showers, or air-conditioning units for large buildings.