The book was released at the time that ads by Swift Vets and POWs for Truth were being aired on U.S. television.

"[9][10] However, portions of the book[11] contain material also found in articles posted under Corsi's name at WinterSoldier.com, a website critical of John Kerry,[12][13] and O'Neill is cited in a later book as describing Corsi as helping to write Unfit for Command, and urging him to back out of media appearances after the controversial comments became public.

[14] In 2007 Corsi, along with several other authors, sued Regnery's parent company, Eagle Publishing, claiming the company "orchestrate[d] and participate[d] in a fraudulent, deceptively concealed and self-dealing scheme to divert book sales away from retail outlets and to wholly owned subsidiary organizations within the Eagle conglomerate.

Corsi's motivations behind its publication and book itself has been compared to Unfit for Command and criticized as unsubstantiated, misleading, or inaccurate.

[17][18][19][20][21][22][23][24][25] In response, the Obama campaign issued a 40-page rebuttal called Unfit for Publication, a play on the title of Corsi's 2004 book, on his website FightTheSmears.com, alleging serious factual errors.