Dropping supplies to isolated or behind-the-lines forces is a very real logistical issue. While some of those supplies might be munitions, rations and medical supplies are a significant part of the need.
I know, it doesn't make you feel any friendlier to the issue, but tech has multiple applications. Chainsaws were invented to increase survivability of mothers in difficult births.
Dropping supplies to isolated or behind-the-lines forces is a very real logistical issue. While some of those supplies might be munitions, rations and medical supplies are a significant part of the need.
I know, it doesn't make you feel any friendlier to the issue, but tech has multiple applications. Chainsaws were invented to increase survivability of mothers in difficult births.