Noun
(military) military drill of troops in standard marching (shoulder-to-shoulder)
Source: WordNetclose order drill
I can't stand to sing the same song the same way two nights in succession, let alone two years or ten years. If you can, then it ain't music, it's close-order drill or exercise or yodeling or something, not music. Billie Holiday
When I slept, armies of footnotes marched across my dreams in close-order drill. Ted Morgan