TIL that "G.I." originally referred to galvanized iron
TIL that "G.I." originally referred to galvanized iron

www.wordorigins.org
G.I. — Wordorigins.org

TIL that "G.I." originally referred to objects made from galvanized iron from WWI on, before it was reinterpretated as "government issue ", and by WWII, applied to American soldiers.