Good to hear your cleared for take off !
oh, I was going to add in that it can depend which way they are coming from if they would attack also.
Fighters flying escort latter on would save ammo on the way out, then use it , and if anything was left on the way back they would and did attack targets of opportunity.
Same with Bombers, if for some reason they had left over ordnance they would take pop shots at anything German.