The released single was edited in which a different gunshot sound was used and does not include the cheering crowds nor the tolling bells at the end. Reportedly, producer
Paul A. Rothchild was so particular about how the song came out that it ultimately took over 130 takes to finish. Upon completion, the song became the band's fourth
Top 40 hit in the US, peaking at number 39 on the
Billboard Hot 100, and enjoying an 8-week appearance on the
Billboard Hot 100 list overall. "We Could Be So Good Together" served as the B-side. However, the lyrics were controversial at the time and many radio stations refused to play it.
Billboard described the single as "one of the most unusual and intriguing disks of the week in both arrangement and material" that "should prove a top chart item."
Cash Box said that the "strong beat, instrumental majesty and a midway break unlike any dramatic effect on a single put together a smash outing," and also praised the "sheer passion" of the song. In retrospect,
Richie Unterberger declared "The Unknown Soldier" as one of the "first-rate tunes" of the album. He described it as "spooky" and "uncompromisingly forceful as anything the band did." == Personnel ==