Meeting Engagements with no trench systems?

[Heliocon]

I noticed the exactly same thing, Played about 50% of africa and now working on Kursk which is imo alot better overall game and more impressive. So far though still always seems to be assualt vs defend, wasnt kursk a liquid moving battlefield with armor? Where are the, race the enemy to seize the town, or each side has 50% of a city, push the enemy out!