What shortages did Filipino and American defenders face on the Bataan Peninsula?

During the Battle of Bataan, Filipino and American defenders faced severe shortages due to poor planning during their withdrawal to the Bataan Peninsula, which resulted in large quantities of supplies being left behind.1

The defenders endured the following critical shortages:

• Food: Troops were placed on half rations almost immediately. They were forced to survive on minimal amounts of rice and, in desperate circumstances, monkey meat.1
• Medical Supplies: The forces suffered from widespread illness, including malaria and dengue fever, without adequate medical resources.1
• Military Support: The defenders operated without air cover or naval support throughout their 99-day stand.1
• Ammunition: Due to the failed withdrawal, the troops lacked sufficient ammunition stores.1