The Pentagon announced Tuesday that approximately 140 U.S. service members have been wounded since the start of military operations against Iran that began in late February.

Chief Pentagon spokesperson Sean Parnell said in a statement that the casualties occurred "over 10 days of sustained attacks" during what has been designated as Operation Epic Fury, according to one military source, though another source referred to the operation as Operation Epic Freedom.

The operation reportedly commenced on February 28, marking the beginning of direct military confrontation between U.S. forces and Iran. The Pentagon has not provided detailed information about the nature or severity of the injuries sustained by American personnel.

The announcement represents the first official casualty count released by the Defense Department since the conflict began. Military officials have not specified the locations where the injuries occurred or provided a breakdown of injury types.

The Pentagon has not released information about enemy casualties or provided details about the scope and objectives of the ongoing operation. The conflict marks a significant escalation in tensions between the United States and Iran that have persisted for years over various regional and nuclear issues.