The family of Richard Overton, the oldest known World War II veteran, says he was admitted into the hospital last week.
The 112-year-old celebrated his birthday in May.
Overton lives in Austin in a home he built 72 years ago.
He volunteered for service in 1942 and became a member of the army's 188th Aviation Engineer Battalion, an all-black unit that served on various islands in the Pacific.
In 2013, he was honored by President Barack Obama during a Veterans Day ceremony at Arlington National Cemetery.
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