John Herstine was born on February 7, 1917 in Uniontown, PA. He served in Merrill’s Marauders ((5307th Composite Unit- Provisional) and served in the China-Burma-India Theater.
Merrill’s Marauders (named after Frank Merrill) or Unit Galahad, officially named the 5307th Composite Unit (Provisional), was a United States Army long range penetration special operations jungle warfare unit, which fought in the Southeast Asian theater of World War II, or China-Burma-India Theater (CBI). The unit became famous for its deep-penetration missions behind Japanese lines, often engaging Japanese forces superior in number. About 3000 soldiers served in the unit.
He was killed in the Battle of Tengchong in China in 1944. He is remembered with a cenotaph in Tengchong, China.

From Find a Grave:
Son of Alvin Wilson Herstine and Blanche Herstine. Husband of Sarah Buchanan Herstine. John, who resided at 2707 North Broom Street, Wilmington, Delaware, served as a Captain with the Infantry, U.S. Army during World War II. He was "Killed In Action" at Tengchung, China serving as an Infantry Training Office commanding Chinese Troops in the Chine-India-Burma theatre. He had served the Army for two years and eight months at the time of his death and was decorated with the Legion of Merit.