500 meters. Turn is determined by command cycle.
I didn't say the game had no combat engineering in it. It's in here. It's just a bit abstracted for the most part.
River crossings for NATO are a HUGE problem. Most Warsaw Pact equipment is amphibious. You HAVE TO BLOW THE BRIDGES!!! If you don't I'll be getting feed back from you here on the forums crying about how unbalanced that scenario was as you didn't hold the Soviet Tide back at all.
Here is a screen shot showing where I blew the bridge. Arrow 1. [8D]
Right next to it you can see where the AI built another bridge. Arrow 2. [:@]
Their advance continued right after that! [X(]
There are minefields and obstructions in the game as well. A problem to doing Combat Engineering correctly is the vast number of coding/game issues that have to go right for them to work.
1) They take time to create. Usually lots of time. Most games don't have that. FPC to some extent does. That wasn't the main issue here.
2) They have to have specialized equipment and supplies at the site when needed. This is the main issue. CE's don't just magically materialize out of thin air. They are a much needed special asset and every commander on the front is screaming for them. Where in the columns are they? I want them here NOW!! FINALLY, the CE's are here but their trucks are lost in the rear SOMEWHERE....and on it goes.
3) As engineer units are depleted/stretched thinner they rely more on untrained manpower to help them. That increases the time for completion of the task....now we go back to #1 and start the loop again.
What Capn and Rob have done is to add in the most frequently used CE functions as seamlessly as possible. [&o]
If the unit has amphibious capability it will cross the river after a time penalty. If all the units that are crossing have amphibious capability then there will be no bridge built. If all the units do not have amphibious capability a bridge will be built there.
Not a perfect answer but one that works in the context of the game very well.
Good Hunting.
MR

The most expensive thing in the world is free time.
Founder of HSG scenario design group for Combat Mission.
Panzer Command Ostfront Development Team.
Flashpoint Campaigns: Red Storm Development Team.