Haven't played Basic Impetus in a while (not bad, but only one simple ancients rule set at a time for our club). It didn't have a PIP mechanic. Instead you roll for initiative, so it is possible to move two bounds in a row.
The Italian unit abbreviations are not intuitive in English. Heavy cavalry = CP, etc.
Also, when your unit is hit you roll for cohesion. No matter how hard you are hit, a roll of 1 on the die shrugs off the hits in most cases. I recall Tom flanking one of my units, getting 3 hits and I rolled a one. I got one hit back on him and he rolled a 6. The weeping, wailing and gnashing of teeth was prodigious. The result was stranger than the dreaded 1-6 DBA roll.