Can you even imagine being told that you had to provide supplies for 200,000 troops to cross over 1,000 miles that you actually don't know that much about? Some of the greatest militaries have been decimated by not having adequate ammunition, food, and water. Some say it's morale that wins wars so the question is where does good morale come from? If you want to negatively affect morale you reduce rations. It doesn't matter what your military objective is, if the troops aren't happy with their basic needs, they won't give their commanders their best. On many occasions they have fled.
Here's to all the unsung heroes in the supply chain.