Surveillance of the immediate surroundings using one's senses.

A style of gaming in first-person shooters (FPS), where realistic ("real-world") settings are simulated by the gaming engine (to the best of its ability) and players use authentic military tactics to accomplish goals in the game.

(military) The techniques for using weapons or military units in combination for engaging and defeating an enemy in battle.

Something that is done in order to put off a decision or action until later.

The space covered by a steamer in turning 180° out of her original course.

plural of tactical diameter

The placing of a vote for a candidate other than one's first choice, for strategic reasons, in an attempt to prevent an undesirable outcome.

The piecemeal removal or scaling back of something (especially political opposition); a gradual attack on an opposing position, group, etc.

plural of tactical warning

(military) A warning of an ongoing or immediately impending attack.