Volunteers

Servicemen of the Kiev-1,Ukrainian volunteers battalion, take part in training exercises in Kiev on August 28, 2015. Ukraine and pro-Russian rebels on August 27, 2015 reported the death of eight people in fresh clashes that endanger nascent talks on a new truce agreement for the war-torn separatist east. Government spokesman Oleksandr Motuzyanyk said seven Ukrainian servicemen had been killed and 13 injured in fighting that centred mostly around the pro-Russian republic of Donetsk

Sergei Supinsky/AFP

Servicemen of the Kiev-1,Ukrainian volunteers battalion, take part in training exercises in Kiev on Friday

Iraqi Shiite volunteers who have joined

Haidar Mohammed Ali/AFP/Getty Images

Iraqi Shiite volunteers who have joined government forces to fight Sunni jihadists from the Islamic State (IS) take part in a training session near the southern port city of Basra.

Shiite volunteers from the Iraqi Ketaeb (brigade) Hezbollah, march as they join the Iraqi army to fight against Jihadist militants of the Islamic State (IS), formerly known as the Islamic State in Iraq and the Levant (ISIL), on July 9, 2014, in Baghdad.. Iraq's government once battled entrenched Shiite militiamen but is now making common cause with them against a jihadist-led onslaught that Baghdad's forces are struggling to contain on their own.

Ahmad Al-Rubaye/AFP

Shia volunteers from the Iraqi Ketaeb (brigade) Hezbollah, march as they join the Iraq army to fight against Jihadist militants of the Islamic State, formerly known as the Islamic State in Iraq and the Levant (Isis), on Wednesday, in Baghdad

Iraqi men who have volunteered to join the fight against a major offensive by jihadists in northern Iraq, climb on an army truck outside a recruiting center in the capital Baghdad.

Ali Al Saadi/AFP/Getty Images

Iraqi volunteers to join the fight against a major offensive by jihadists in northern Iraq, climb on to an army truck outside a recruiting centre in the capital Baghdad

Iraqi army troops chant slogans against the Islamic State of Iraq and the Levant (ISIL)

Ali Al-Saadi/AFP/Getty Images

Iraqi army troops chant slogans against the Islamic State of Iraq and the Levant (known as Isis) outside a recruiting centre in the capital Baghdad, on Friday, as they recruit volunteers to join the fight against a major offensive by the jihadist group in northern Iraq

Volunteers take a break during a rehearsal for the opening ceremony of the 14th IAAF World Championships in Moscow...Volunteers take a break during a rehearsal for the opening ceremony of the 14th IAAF World Championships at the Olympic stadium in Moscow August 7, 2013. The event will be held from August 10 to 18. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS)

Fabrizio Bensch/Reuters

Volunteers take a break during a rehearsal on Wednesday for the opening ceremony of the 14th International Association of Athletics Federations World Championships at the Olympic stadium in Moscow