Vintage WWII US Army Shirt M37 🇺🇸🐑🧨

Overall in nice shape. The cuff button on the right sleeve is cracked and broken as shown. Label is faded and illegible. It measures up like a small, please see details below. Feels like all wool and given the era it likely is.

Pit to pit: 21”

Pit to cuff: 16.5”

Top of shoulder to hem: 29.5”