Sgt. Leigh Ann Hester fought her way through an enemy ambush south of Baghdad, killing three insurgents with her M-4 rifle to save fellow soldiers' lives -- and yesterday became the first woman since World War II to win the Silver Star medal for valor in combat. The 23-year-old retail store manager from Bowling Green, Ky., won the award for skillfully leading her team of military police soldiers in a counterattack after about 50 insurgents ambushed a supply convoy they were guarding near Salman Pak on March 20. The 23-year-old retail store manager from Bowling Green, Ky., won the award...