WASHINGTON — The Army is conducting an investigation into large-scale fraud tied to an Army recruitment program, Sen. Claire McCaskill, the head of the Senate Subcommittee on Financial and Contracting Oversight, disclosed Monday, a day before she held a hearing on the scandal. Investigators have found that $29 million in taxpayer money has been lost to fraud, but that number could increase to nearly $100 million by the time the probe is over, Maj. Gen. David Quantock, the Commanding General of U.S. Army Criminal Investigation Command, told lawmakers at the hearing Tuesday. The Recruiting Assistance Program began in 2005 at...