"Soldier" is an R&B/hip hop song written by Beyoncé Knowles, Kelly Rowland, Michelle Williams, Rich Harrison, Sean Garrett, T.I., and Lil Wayne for Destiny's Child's fourth studio album, Destiny Fulfilled (2004). It was produced by Knowles and Harrison and released as the album's second single in fall 2004. The song reached peaked at number 3 Australia and the United States, where it became the group's tenth and final consecutive top 10 hit, and peaked within the top 10 in New Zealand, the UK, Denmark, Ireland, Israel, Finland, Italy, Greece and Switzerland. The song also was nominated for a Grammy Award for Best Rap/Sung Collaboration category and won the group a Soul Train Lady of Soul Award for Best R&B/Soul Single by a Group, Band or Duo.

Soldier was performed by Beyonce on the Experience tour. It was performed as a remix in a Destiny's Child medley. The remix contained a sample of the 2007 hit Crank That (Soulja Boy).

A pregnant Solange Knowles, Beyoncé's sister, and rapper Ice Cube made a cameo appearance in the music video, which was filmed by Norwegian director Ray Kay and was nominated at the 2005 MTV Video Music Awards under the category of Best Group Video.

Kelly Rowland's part with the lines "...their grill gleamin'..." was sampled for the chorus of the song "Grillz Gleamin'" in DJ Drama's album Gangsta Grillz: The Album

"Soldier" is a song by Neil Young from the 1972 soundtrack album, Journey Through the Past. It was the only new track included on the album, and was later released on the 1977 compilation Decade, although it was slightly edited.

The song observes how a soldier's eyes "shine like the sun." This is most likely referencing young men returning from war traumatized by the things they have seen in battle. In the second verse, Young sings he does not believe Jesus because he "can't deliver right away". This could be seen as an atheist comment referencing the fact that Jesus cannot deliver right away to prayers or wishes, therefore he does not exist.