What is the offcial name of the cup which an annual knockout football competition and Crewe Alexandra'swill also participate along with competing in League Two?
2017–18 Crewe Alexandra F.C. season: The 2017–18 season is Crewe Alexandra's 141st season in their history and second consecutive in League Two. 2017–18 Crewe Alexandra F.C. season:  Along with competing in League Two, the club will also participate in the FA Cup, EFL Cup and EFL Trophy. FA Cup: The FA Cup, known officially as The Football Association Challenge Cup, is an annual knockout football competition in men's domestic English football.
The Football Association Challenge Cup