I have found that units don't always start on fire at will. The pattern seems to be:
Round 1: fire at will
Round 2: holding fire
Round 3: fire at will
This seems to happen every game but I didn't start counting the pattern till my last 2 games so I cannot confirm if there is a pattern.
Round 1: fire at will
Round 2: holding fire
Round 3: fire at will
This seems to happen every game but I didn't start counting the pattern till my last 2 games so I cannot confirm if there is a pattern.