Which ambush type is characterized by detailed planning but lacks knowledge about a specific target?

The ambush type characterized by detailed planning but lacking knowledge about a specific target is the ambush of opportunity. This type of ambush typically arises when a unit has prepared to engage in an ambush scenario without precise information on the enemy's movements or specific targets. The planning involves creating an advantageous position and ensuring that the groundwork is laid for a surprise attack, but the absence of detailed intelligence about the enemy's exact disposition leads to a situation where the ambush can be executed based on available targets that present themselves in the moment.

In contrast, other types of ambushes, such as a hasty ambush, are executed with even less preparation and often are spontaneous in nature, while a deliberate ambush involves extensive reconnaissance and detailed knowledge of a specific target, ensuring a higher chance of successful engagement. A point ambush, on the other hand, is focused on a fixed point where the enemy is expected to arrive, thus requiring a similar level of target knowledge as deliberate ambushes. Therefore, the ambush of opportunity stands distinct in its balance of preparation versus real-time engagement opportunities.