What type of ambush involves visual contact with the enemy and immediate action?

The type of ambush that involves visual contact with the enemy and requires immediate action is indeed the hasty ambush. This tactical approach is characterized by its quick execution, often in response to an unplanned encounter with enemy forces. Hasty ambushes are typically set up when troops spot the enemy, allowing them to take advantage of the element of surprise with minimal preparation time.

In contrast, other ambush types, like the deliberate ambush, require more preparation and planning to set up defensively advantageous positions often without immediate engagement. An ambush of opportunity usually describes scenarios where a target is exploited as it presents itself rather than being planned out in advance. Area ambushes are designed around a specific location to maximize damage over a larger area but also necessitate prior planning and setup.

The key distinction is that a hasty ambush capitalizes on immediate enemy presence, making it a reactive tactic requiring swift deployment, differentiating it from the more methodical and planned alternatives.