If I have a unit with 2AP left but want to attack and it takes 3 AP, can I use a CAP to make the attack?
The Actions section of the rulebook has exactly that sort of example:
rule example wrote:
Soviet Turn: The Soviet player wishes to attack the German
LMG 09 with his Rifle 05. But Rifle 05 must pay 4APs to attack
and it has only 3APs remaining. The Soviet player counts off
the remaining 3APs from his AP Track, plus 1CAP from his CAP
Track, attacks and misses.