[montieth]

One thing to realize with harassing artillery is that a few random rounds on troops to slow them up is good. If you're being forced to ground/cover every 5-10 minutes with a just a few rounds to keep your range, you might just start trying to push through and ignore the rounds just in time to get a Fire For Effect mission.

I seem to recall a number of games that effected harassing fire vs Fire For Effect as modes that artillery could sustain. You adjusted onto target with one or two rounds and then hit the FOF button to bring down destruction (or neutralization) on a target.