The man who called himself the “mastermind” of the September 11 attacks, and four comrades, are back before a military judge in Guantanamo Bay to face charges that could lead to their execution.

A diverging portrait of the US Army sergeant accused of killing 16 Afghan villagers is emerging as records and interviews show a man appreciated by friends and family who won military commendations, yet faced professional disappointment, financial trouble and brushes with the law.

A former Muslim chaplain at the US military prison for terror suspects in Guantanamo Bay, Cuba, has been charged with disobeying orders by improperly handling classified information.