Why did Ron Fourner mean by 'Keep up the fight?'

TPM:

On page 21 of the report, the committee reprints an email exchange between Ron Fournier - then a reporter for the Associated Press, now the head of the AP's Washington bureau - and Bush's chief adviser Karl Rove:

Rove exchanged e-mails about Pat Tillman with Associated Press reporter Ron Fournier, under the subject line "H-E-R-O." In response to Mr. Fournier's e-mail, Mr. Rove asked, "How does our country continue to produce men and women like this," to which Mr.

Fournier replied, "The Lord creates men and women like this all over the world. But only the great and free countries allow them to flourish. Keep up the fight."

An email to Fournier, seeking clarification on what "fight" he thought Rove was engaged in at the time, was not returned.

Maybe it has to do with the Iraq war or had to do with this at that time?:Rove first testified before the grand jury on his connection to the CIA Leak Investigation in February 2004.