Troops of soldiers have held a parade to mark their 2013 role as NATO's response force.
American commanders say the risks they face of backfilling their troops with Iraqi soldiers is manageable.
CNN: Behind the Scenes: Surge helping, but Iraq still on knife's edge
It is also supplying up to 240 troops to train soldiers in Mali and neighbouring countries in the region.
Many of the U.S. troops killed were soldiers operating in the Baghdad area who were struck by roadside bombs, small-arms fire and indirect fire, according to military reports.
U.S. troops rescued the seven soldiers April 13 after almost three weeks of captivity.
The BBC's Joseph Benamse in Bangui says France recently added 100 troops to its 200 soldiers stationed in CAR.
In terms of morale among troops, he says soldiers - both regular and reserve - were generally upbeat in Iraq.
The Iraqi prime minister also has flooded the city with additional troops, bringing in soldiers from western Iraq along with their American advisers.
Troops from several African soldiers have been deploying to Mali to take over from the French-led mission in the run-up to elections due in July.
Fighting between Islamist insurgents and Malian troops - backed by French soldiers - also continued in the central city of Gao.
Sending more soldiers, or troops who actually fight, remains anathema in Germany.
Where possible, the foreign troops would operate alongside Afghan soldiers and police.
On his visit, the first by a British foreign secretary to Mali, Mr Hague also met the commander of the AFISMA international force as well as the deputy commander of the EU mission training Malian soldiers and British troops serving under him.
Once the Chadian troops leave, about 4, 000 soldiers from other African nations remain to aid Mali.
Knight-Ridder newspaper reporter Jonathan Landay recently traveled with US troops in the same area where the soldiers were killed, and he joins us from Kabul.
And a lot of times, military kids, they have to move often, because soldiers move -- our troops, they move every couple of years, and their families have to move, too.
Recently, U.S. Defense Secretary Robert Gates has been ratcheting up pressure on the other NATO allies to do more, asking for about 3, 500 soldiers to help train Afghan troops, 16 helicopters, and three infantry battalions with a willingness to fight.
France has been pushing hard for the deployment of West African troops and the arrival of the first Nigerian troops should bring some relief to French soldiers who are only getting limited support from the fairly weak Malian army, analysts say.
The government's "Troops to Teachers programme" aims to get soldiers leaving the forces to retrain as teachers.
The Duke of York has attended a parade in Shropshire to honour soldiers serving in Afghanistan and remember troops who died.
About 1, 000 American troops are in the southern Philippines training local soldiers to combat Abu Sayyaf rebels, which the Bush administration links to the al-Qaeda global militant network.
Chad had said its soldiers, fighting alongside the French troops, killed two top militant commanders, Abdelhamid Abou Zeid from al-Qaeda in the Islamic Maghreb, and veteran Islamist leader Mokhtar Belmokhtar.
Turkish media reported that DHKP-C members earlier this month assaulted German troops they mistook for U.S. soldiers who were accompanying a Patriot-missile battery in southern Turkey set to be deployed along the Syrian border next week.
WSJ: Security in Ankara Is Adequate, U.S. Says; Leftist Group Suspected in Blast
Its troops are fighting alongside nearly 3, 800 African soldiers, it said, a number expected to go up.
CNN: French troops kill 'hundreds' of Islamist fighters in Mali
Following the summit, South Africa said it was withdrawing about 200 troops stationed in Bangui, after 13 of their soldiers died in the rebellion.
BBC: Central Africa Republic crisis: Refugee numbers 'swell'
The South African National Defence Force Union (Sandu), which represents soldiers, said Mr Zuma should recall troops immediately, "even if it entails launching a military offensive to relieve our troops in distress", its national secretary Pikkie Greeff said.
After midnight, the boat disgorged some seventy Dutch soldiers, who opened the city to waiting troops.
France has 2, 150 soldiers in Mali and 1, 000 more troops supporting the operation from elsewhere.
France hopes West African soldiers will eventually take the lead alongside Malian troops in securing the country.
Nato hopes for a gradual drawdown of foreign troops from the current peak of about 150, 000 soldiers from more than 40 countries.
BBC: Clinton defends US Afghan policy after Karzai criticism
应用推荐