Which retail innovation revolutionized the Union Army's supply chain during the American Civil War?

Throughout military history, retail innovation has played a crucial role in supplying armies and navies. From ancient quartermaster systems to modern military exchanges, the evolution of military retail has significantly impacted warfare capabilities and troop morale. This poll tests your knowledge about a groundbreaking retail innovation that changed military logistics during a critical period in history.

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Montgomery Ward's mail-order catalog system, which allowed soldiers to order supplies directly to field positions
The Commissary Department's standardized canned rations, which created the first mass-produced combat field meals
Tiffany & Co.'s military branch stores, which followed troop movements to provide officer supplies
Brooks Brothers' mobile uniform fitting stations, which measured soldiers on-site for custom uniforms