Donald Trump's first military raid, in which officials have said 'almost everything went wrong.'
The U.S. military said on Wednesday it was looking into whether more civilians were killed in a raid on al Qaeda in Yemen on the weekend, in the first operation authorized by President Donald Trump as commander in chief.
An eight-year-old American girl and a SEAL Team Six member have been named after they were killed in the raid.
It involved 'boots on the ground' at an al Qaeda camp near al Bayda in south central Yemen.
An official said that the raid was directed from a US base in Djibouti.
Officially, it was to search for 'information that will likely provide insight into the planning of future terrorist plots'. 
A US official said that SEAL Team Six members took a Marine MV-22 from a Gulf of Aden-based ship, the USS Makin Island, to get to the compound on a moonless night.
SEAL Team Six is the US Navy's Special Forces team that gained worldwide fame for killing Osama bin Laden.
That source added that with armed drones above, the SEALs got to the compound where they were instantly met with heavy fire - and it was obvious that al Qaeda compound fighters had been expecting the Americans.        
Just five days after taking office, Trump was presented with the first of what will be many life-or-death decisions: whether to approve a commando raid that risked the lives of US Special Operations Forces and foreign civilians alike.
US president Barack Obama's national security aides had reviewed the plans for a risky attack on a small, heavily guarded brick home of a senior al-Qaeda collaborator in a mountainous village in a remote part of central Yemen. But Obama did not act because the Pentagon wanted to launch the attack on a moonless night and the next one would come after his term had ended.