With all higher ranks out of the fight, Sgt. Matthew Leonard took command to save his fellow soldiers.
By Jon Guttman
The service members were deployed in support of ongoing security operations at the southern border.
By Tara Copp, AP
Squads had grown to 15 Marines during infantry battalion experiments in recent years.
Sgt. William Shemin's Medal of Honor was delayed nearly 100 years because of anti-Semitism.
By Jon Guttman
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