A race of pseudo-humans army must plan a system of rations for a long campaign on a faraway land in which they cannot rely on foraging. The campaign’s expected to last somewhere between a few months to a couple of years.
Here are the details of the army:
It numbers around 50.000 men, all will leave the country, leaving its defense in the hands of a separate defense force.
It’s divided into brigades of 5.000, regiments of 1.600, and battalions of 500. There are many types of smaller divisions but they’re dismissible in this question.
2/3 of it is infantry and 1/3 is cavalry (half of it light, the other half heavy).
Horses used by the heavy cavalry are very strong and can carry a lot of weight (aside from armour), but the light-breed cannot afford to carry anymore weight without compromising its speed.
The soldiers’ health is very important to the army for a number of reasons, and must be kept in pristine condition, so they must provide soldiers with the bare minimum healthy intake of vitamins, carbohydrates, etc...
It’s well trained and disciplined.
Details on the race:
Their daily water intake is about two to three times bigger than a human’s.
Aside from water, all other food consumption is similar to a human’s.
It’s a producer of limes, lemons, oranges, nuts, corn, potatoes, wheat, pig/cow/chicken/sheep/deer meat, and milk.
Its manpower doesn’t allow it to make available more than 1 auxiliary for every 5 soldiers
Despite having only 16th century technology, they have discovered the bottling and pasteurization/boiling method of food preservation.
So here comes the questions:
How much food (in kg and calories), and what types of food, would the average soldier consume daily?
How could this food be transported without compromising speed, maneuverability, and effectiveness?