I have set both level bomber and fighter on same airfield and different airfields within the 50 KM distance in addition to making them both active, but DCG isn't giving me escort missions. Any ideas?

What's the ratio of fighter squadrons to bomber?  Generally you need more fighter squadrons to bombers because the fighter squadrons will be assigned defensive missions before offensive ones.

the ratio was 1 to 1. I will increase it. Thanks! With regards to the length of the western front map - it's not giving me anything in the properties file

You can estimate the distance by going to the FMB and placing one plane with the player box checked and making two waypoints on opposite sides of the map.  Go and "test" the mission but on the mission introduction page, zoom into the first waypoint.  It'll give you the distance to the second waypoint and thus the approximate size of the map.

 

See attached image.

Ahh! It's 530 sq.km so what is the max radius you would set for this map?  Lonestar mentioned 3:1 I will try that - as soon as windows cooperates and let me update. 

I'd set the action radius just a little bigger like 550 km or 600 km.

Ahh! Thanks Paul! So the rule of thumb is to set the action radius a little bigger than the distance between the farthest enemy bases?

Yes, that's a good rule.