salvation : Idioms & Phrases

• noun a charitable and religious organization to evangelize and to care for the poor and homeless
  

WordNet

• an organization for prosecuting the work of Christian evangelization, especially among the degraded populations of cities. It is virtually a new sect founded in London in 1861 by William Booth. The evangelists, male and female, have military titles according to rank, that of the chief being "General." They wear a uniform, and in their phraseology and mode of work adopt a quasi military style.

Webster 1913