Setting up Ambushes

(The following is as quoted from ShackTac)
Types of Ambushes
There are three main types of ambushes for our purposes - the deliberate one, in which we know that an enemy force is going to be moving through a given area, the hasty one, in which we unexpectedly have an opportunity to ambush an enemy force that has not detected us, and the delaying or guerilla one, in which we are attempting to strike the enemy, cause casualties and confusion, and they withdraw before they can retaliate.

Deliberate Ambush
These are typically convoy ambushes. We may be tasked in a mission to stake out a slice of terrain and cover roads that an enemy convoy is expected to pass. In such a situation, demolition plays a large part. Mines can be set, as can satchel charges and other explosive devices. A relatively large amount of prep time is given for this, and the results tend to reflect this. Deliberate ambushes are devastating and highly effective. The one big unknown is whether the expected enemy force will be the same composition and size as our mission briefing or intelligence reported. The difference between a troop convoy and a tank convoy, for instance, is huge, and both must be engaged with different tactical considerations.

Hasty Ambush
Hasty ambushes are usually against enemy infantry but can also be against other enemy forces. The decision to conduct a hasty ambush needs to be communicated rapidly, since there usually isn't much time to get positioned and ready to open fire. Fireteam leaders and squad leaders are the most common leaders to give orders for a hasty ambush. Satchel charges and other explosives play a very limited role in these types of ambushes due to the lack of time and ability to position them.

Delaying/Guerilla Ambush
Delaying or guerilla ambushes work best against enemy infantry. The purpose of them is to either delay the enemy's pursuit of friendly forces during a withdrawal or sow confusion and death amid their ranks unexpectedly before vanishing. The size of an ambush team of this nature is usually a squad or less.

The goal of a delaying ambush is to engage the enemy by fire and cause enough casualties to temporarily halt them. At that point, the team withdraws to another defensive position from which they repeat the ambush if possible.

The goal of a guerilla ambush, on the other hand, is to engage the enemy by fire, cause casualties, and withdraw before the enemy can decisively respond to the ambush team and fix them. The guerilla ambush team breaks contact, maneuvers to lose any pursuit from the enemy, and then evaluates its next moves.

Both of these ambush teams must be able to engage the enemy, produce the desired effect, and relocate or disengage before enemy support assets such as artillery or close air support can be brought to bear.