Embedded journalism
Embedded journalism refers to war correspondents being attached to military units involved in armed conflicts. While the term could be applied to many historical interactions between journalists and military personnel, it first came to be used in the media coverage of the 2003 invasion of Iraq. The United States military responded to pressure from the country's news media who were disappointed by the level of access granted during the 1991 Gulf War and the 2001 U.S. invasion of Afghanistan.
Journalists who instead opted to cover the war on the battlefield but unattached to any military force came to be called "unilaterals." Journalists chose to act as unilaterals to avoid the restrictions imposed on them by the military, and sometimes embed restrictions, which required embeds to stay with assigned units. Or they out of concern that being under the constant protection of troops on the battlefield would bias their judgement in favor of coalition forces. The military would often regard unilateral journalists as sources of trouble on the battlefield and refuse to talk to them or not recognize unilateral journalists as "official" media.
The practice has been criticized as being part of a propaganda campaign whereby embedded journalists accompanied the invading forces as cheerleaders and media relations representatives.