Advancing over open ground

[Flibby]

With my thinking head on I can see that it would obviously be a bad idea to march in to no man's land without cover of fire or smoke.

My question is based around how difficult it is to pin the enemy sometimes. For reference I'm mainly playing the WW2 mod for AoTR. (Recommendations between modern wars and Spanish Civil War modules welcome...).

With the scenario time limits, does anyone else feel that they struggle to pin all enemy units which could hit an advance, which I assume simulates 'winning the firefight '?

Cheers