The Salvation Army is a Christian denomination that upholds the core tenets of Christianity, emphasising salvation through faith in Jesus Christ. Central to its doctrine is the belief in the Trinity: God the Father, God the Son (Jesus Christ), and God the Holy Spirit. The Salvation Army teaches that human beings are inherently sinful but can be redeemed through Christ's atoning sacrifice. Salvation is viewed as a transformative process involving repentance, faith, and a personal relationship with Jesus. The Army also holds to the authority of the Bible as the inspired word of God, serving as the primary guide for faith and practice. The sacraments of baptism and the Eucharist are not observed as rituals within The Salvation Army, differing from many other Christian denominations; instead, it emphasizes living a holy life and engaging in acts of service as expressions of faith.

In addition to its spiritual beliefs, The Salvation Army is deeply committed to social justice and humanitarian efforts. Its mission extends beyond spiritual salvation to include meeting the physical and social needs of individuals and communities. This is encapsulated in its motto, "Heart to God, Hand to Man." The organisation operates numerous social programs, including shelters for the homeless, rehabilitation centres, disaster relief efforts, and various community services aimed at alleviating poverty, addiction, and other social issues. The Salvation Army believes that faith must be demonstrated through tangible acts of love and service, reflecting the teachings of Jesus to care for the least and the lost. This holistic approach to ministry seeks to address both the spiritual and material needs of people, embodying a practical application of the gospel.