Men and women serving in the military have spent hours stomping around the base in well-constructed running formations yelling a repetitive song at the top of their lungs.
Military cadences, or close-order drill, date back hundreds of years as a signal to keep troops covered and aligned as they march forward in the battlefield. Now it’s primarily used to keep service members in step — landing their feet at the same time — causing a prideful beat.
Related: 5 great military cadences you haven’t thought about in years

Regardless, military cadences stain our memories like a top 40 hit on the radio. Once you hear it, let the rhythm teleport you to the good old days.