[cavtroop]

Reading this, on page 143, it seems to me the intent is that during the pause rather than reset your weapons, reload, use a radio, etc, you take a few moments to conceal yourself and take aim at potential enemy locations/last known locations, etc. This is what would give you the plus to initiative it's talking about.

So rather than taking the time during the pause to do other things, you're on 'overwatch' - it probably would have been better called that than a 'hasty ambush' but I think that's the intention there.

EDIT; Im not sure about what I wrote above, thats more the 'keep watch' action I think. Perhaps the 'Hasty Ambush' is more of a 'move to new position, then set up' versus 'keep watch'.