Besides food shortages, what other shortages were there in My Brother Sam Is Dead by Christopher and James L. Collier?

In My Brother Sam is Dead, by Christopher and James Collier, there are many shortages, in addition to food.

As in all times of war, those involved in the fighting suffer many shortages of things that they are otherwise accustomed to. Some of these would include the following: 

There was a shortage of warm and appropriate clothing. Once the clothing they arrived with was torn, worn out, or lost, it was often difficult to have it replaced.

There was a shortage of horses. The soldiers needed horses to help get them from one place to another, to carry items that needed to move from one battlefield to another.

There was also a shortage of medical personnel to tend the wounded. Both doctors and nurses were needed to take care of and perform surgery on soldiers when necessary.