It is probably worth adding this addendum based on a "Byte Hassanya" scenario that POS and I have started for fun.
In short, if you are NOT playing the scenario blind then you need to use the Scenario Editor to have a look at the forces and map. In addition there is one more wrinkle if the scenario includes reinforcements... something that POS helped me with:
"In the editor, click 'Unit Editor', then 'On Map', and a list of reinf batches will come up, click each one in turn to see what reinfs are associated with 1/ 2/ 3/ 4 etc. Then click the button at top left to switch to the other side to scrutinise his reinfs too..:)
Note - its important to remember (when making your written notes) that 'Reinf 1/2/3/4' etc batches don't necessarily correspond to the Turn of arrival. For example this pic shows my batch 1 reinfs, yet if you look at the bottom of the page you'll see the designer has scheduled them to arrive on Turn 2. (a bit of a clumsy system but you get used to it) And on the map they'll arrive at the 'reinf point 1' signpost. Also note at the bottom the designer can assign a '% chance of entry' per turn.
See why I said its essential to keep a written aide-memoir note in front of you when playing scens, or your oppo will have you for breakfast. I mean, you wouldn't take a theatre stage without a script.." :)