Macario García (some sources say “Marcario”; the former is on his tombstone) was born on January 20, 1920 in Villa de Castaño, Mexico. He immigrated to the United States with his family in 1924 and they settled in Sugar Land, Texas.
García was working as a farm hand and held only a grade-school education when he was drafted for service in the United States Army on November 11, 1942. He was not yet an American citizen. He was trained as an infantryman, and went to war with Company B, 1st Battalion, 22nd Infantry Regiment, 4th Infantry Division.