Why march at all
The economic blockade of England required all of Europe to take part, but Russia had effectively withdrawn: trade continued by circumventing the ban. The campaign was meant to bring the ally back to its former commitments, not to conquer the country.
The plan was based on a familiar scenario. Earlier campaigns had been won quickly: one major battle near the border, the defeat of the opposing army, and negotiations. The same outcome was expected here, within a few weeks.
The Russian armies declined to give battle and began retreating, joining forces along the way. Every move deeper into the country lengthened supply routes, while the decisive battle never came - and that, not the distance itself, broke the plan.
Where the army was lost
How troop numbers dwindled during the campaign: most of the losses came on the way to Moscow, not on the return journey. This shows the pattern, not exact data.
Summer losses came from disease, hunger, and stragglers. Typhus and dysentery traveled with the columns, supply wagons could not keep up with the march, and horses died from lack of feed, causing the artillery and supplies to fall even farther behind.
Taking Moscow solved nothing. There were no negotiations, the city was burning, and it had no supplies. Waiting in an empty city meant losing the time left before the cold arrived.
The Russian winter destroyed the Grande Armée: everything went according to plan until winter.
Most of the army was lost in summer and fall, before the first severe frosts. The cold completed the retreat, but it did not start it.
The explanation involving frost appeared early and suited everyone: it blamed the defeat on circumstances rather than decisions. The campaign itself remains a classic planning failure, not an example of bad luck.
The main mistake can be stated simply: the plan depended on the enemy's actions. It worked only if the enemy agreed to fight, and it had no backup option if the enemy refused.
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Sources
- The goal of the 1812 campaign was to compel Russia to comply with the Continental System through a decisive battle
- the army's main losses occurred before the occupation of Moscow and were linked to disease, supply shortages, and stragglers, not winter frosts