Battle stations

Battle stations was a general alarm used in naval operations (such as those that influenced the policies of Starfleet) when a starship was going into battle. On Federation starships, a battle stations alarm was usually made in addition to a red alert (or, earlier, tactical alert) alarm.

On Deep Space 9 and the USS Defiant (2370), personnel carried type 2 phasers while a battle stations alarm was in effect. This practice was also adopted on the USS Enterprise (NCC-1701-E) by 2379. 

In 2373, Captain Jean-Luc Picard called for red alert and battle stations when he ordered the Enterprise-E to the Battle of Sector 001.