Officials who spoke with The Post expressed frustration that the additional loss of life in the Middle East is not reflected in the Defense Department’s casualty database.More American service members have died in the Middle East during the ongoing Iran war than the Pentagon has disclosed publicly, according to six U.S. officials familiar with the Defense Department’s internal casualty accounting data. Five of the officials said there have been at least 22 military fatalities — four more than what appears in the Pentagon’s public database, known as the Defense Casualty Analysis System, or DCAS. A sixth official, who like the...