Crossword puzzle clue "for e g for this answer's last six letters"

Answer, when pointing to this answer, to the question "Which letters answer this clue?"

Campaign about which Rumsfeld said in 2003 "it could last six days, six weeks - I doubt six months"

Vat, e.g., for this answer's last six letters?

All, e.g., for this answer's last six letters?

Her, e.g., for this answer's last six letters?

For, e.g., for this answer's last six letters?

Starting a project ... and what the letters between the starting and ending pairs of letters in each starred answer are doing?

Boxer whose nickname is the last five letters of his last name