FACTBOX: Some pending cases in Guantanamo court

(Reuters) - A U.S. military court sentenced Osama bin Laden's driver, Salim Hamdan, to 5 1/2 years in prison on Thursday after he was convicted of providing material support to terrorists in the first U.S. war crimes trial since World War Two.

Twenty more prisoners of the U.S. naval base in Guantanamo Bay, Cuba, also face charges:

OMAR KHADR - A 21-year-old Canadian who was 15 when captured during a firefight at a suspected al Qaeda compound in Afghanistan, Khadr's trial will be next unless the October 8 start date is delayed. Khadr is charged with murdering U.S. Army Sgt. Christopher Speer with a hand grenade and would face life in prison if convicted. He is the only citizen of a Western country among the 265 men still held at Guantanamo.

KHALID SHEIKH MOHAMMED - The accused mastermind of the September 11 attacks admitted in a note to Hamdan's lawyers that he was responsible for overseeing al Qaeda cells abroad and was "the executive director of 9/11." Mohammed and co-defendants Ali Abdul Aziz Ali, Ramzi Binalshibh, Mustafa Ahmed al-Hawsawi and Walid bin Attash are charged with conspiring with al Qaeda to murder civilians in the 2001 hijacked plane attacks. No trial date has been set but all could face execution if convicted. Mohammed, a Pakistani, said at his arraignment hearing that he would welcome martyrdom.

ABD AL-RAHIM AL-NASHIRI - The accused mastermind of the attack on the warship USS Cole would face execution if convicted on charges that include murder and terrorism. The 2000 attack by a small, explosives-laden boat in the Yemeni port of Aden killed 17 U.S. sailors and wounded 47. A Saudi Arabian national of Yemeni descent, al-Nashiri is accused of being al Qaeda's operations chief for the Arabian Peninsula.

AHMED KHALFAN GHAILANI - The Tanzanian captive could also face execution if convicted of charges he helped plan and prepare a truck bomb that killed 11 people and wounded at least 85 at the U.S. Embassy in Tanzania in 1998. A near-simultaneous bombing at the U.S. Embassy in Kenya killed 213 people.

MOHAMMED JAWAD - Now 23, he was sent to Guantanamo at age 16 or 17. The Afghan captive is accused of throwing a grenade into a U.S. military jeep in December 2002 in Afghanistan, wounding U.S. Army Sgt. 1st Class Michael Lyons, U.S. Army Sgt. 1st Class Christopher Martin and their Afghan interpreter, Assadullah Khan Omerk. He would face life in prison if convicted on charges of attempted murder and causing serious bodily harm. Jawad and Khadr are the only two Guantanamo prisoners facing charges for war crimes they allegedly carried out as juveniles.

(Reporting by Jane Sutton in Guantanamo Bay naval base, Cuba; editing by Michael Christie and Mohammad Zargham)