The UK helicopter which crashed in southern Afghanistan, killing five troops, is not believed to have been involved in any enemy action.
The incident marks the bloodiest day for foreign troops in the country this year.
It brings the total number of international troops killed in the war torn country this month to seven.
Nato forces are currently preparing to withdraw combat troops by the end of this year, with responsibility for fighting the Taliban insurgency handed over to the Afghan army and police.
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A British family believed to have fled to Syria have joined Islamic State, according to a statement said to be released on their behalf.
After the heatwave come the storms, with lightning flashes illuminating the night sky across much of the country last night.
An Independence Day event at a UK base has been cancelled by the US Air Force over security fears.