Why did invading armies seem to get stronger as the conquer more land?

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Between attrition (lost in battle), needing to leave troops behind to control conquered territory, and longer supply lines, shouldn’t the armies have gotten significantly thinner and weaker.

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Anonymous 0 Comments

Survivor’s bias and confirmation bias. The armies that weren’t strong enough weren’t conquering lands to begin with – you’d expect the ones to go further to be stronger and vice versa. And you also will define “stronger” as “conquered more” and “weaker” as “conquered less”, leading to a rephrasing of your question being: “Why did invading armies seem to conquer more as they conquered more?”.

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