Defense lawyers for an Amy general facing sexual assault charges say his accuser's testimony gave them plenty to challenge as they prepare to cross-examine her.

The Army captain at the center of the case testified Friday that Brig. Gen. Jeffrey A. Sinclair twice forced her to perform oral sex during their three-year affair. Both times, she says he ended arguments by unbuttoning his pants and forcing her head into his lap as she cried.

Defense lawyers get their turn to grill the accuser Monday and are likely to ask her about a trove of emails and text messages she exchanged with the general, many of them sexually explicit.

Sinclair is believed to be the highest-ranking U.S. military officer ever tried for sexual assault. If convicted, he faces life in prison.