The Salvation Army is a Protestant

Protestantism

Protestantism is one of the three major groupings within Christianity. It is a movement that began in Germany in the early 16th century as a reaction against medieval Roman Catholic doctrines and practices, especially in regards to salvation, justification, and ecclesiology.The doctrines of the...

 Christian

Christianity

Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

 church known for its thrift stores and charity work. It is an international movement that currently works in over a hundred countries.

It was founded in 1865 in the United Kingdom by William Booth

William Booth

William Booth was a British Methodist preacher who founded The Salvation Army and became its first General...

 and his wife Catherine

Catherine Booth

Catherine Booth was the wife of the founder of The Salvation Army, William Booth. Because of her influence in the formation of The Salvation Army she was known as the 'Army Mother'....

 as the East London Christian Mission with a quasi-military structure. The theology of the Salvation Army is "mainstream Protestant".
The Salvation Army was founded in London's East End

East End of London

The East End of London, also known simply as the East End, is the area of London, England, United Kingdom, east of the medieval walled City of London and north of the River Thames. Although not defined by universally accepted formal boundaries, the River Lea can be considered another boundary...

 in 1865 by one-time Methodist minister William Booth

William Booth

William Booth was a British Methodist preacher who founded The Salvation Army and became its first General...

 and his wife Catherine.