A hundred years ago families across the country saw their partners, sons and brothers go to war. More than 8 million people served in the British Army - among them were thousands of Jewish soldiers.
As an exhibition about their role in the conflict gets ready to open, our Senior Correspondent Ronke Phillips has been to meet one man whose grandfather documented his time in the trenches.
The exhibition is called 'For King and Country?', and opens at the Jewish Museum in London on 19 March.
Forces charity Help for Heroes announced it will not accept anydonations raised by the EDL leader.
EDL leader Tommy Robinson - who told demonstrators on a march yesterday "This is a day of respect for our Armed Forces. They've had their Arab Spring. This is time for the English Spring" - started fundraising following the murder of soldier Lee Rigby.
But a spokesman for Help for Heroes said the Just Giving page set up by him would be closed down and all donations would be refunded.
The charity will check for any further donations from EDL members andsaid it would not accept any donations from the group, or any other politicalparty.
A Help for Heroes spokesman said yesterday: "He's the only one that's come to our attention but tonight we'll be doing a cross-count to make sure that anyone else that's saying they're EDL will not be allowed to fundraise for us.
It's the same for any political party, we don't allow political fundraising. As a charity, we're non-political."
Supporters of the EDL and an anti-fascist group hurled dozens of glass bottles at each other yesterday, as they both held marches through central London. Police officers dressed in riot gear intervened to keep the two groups apart.
A group of around 100 anti-fascists mobbed five or six men who were arriving late to the protest draped in Union Jacks and wearing England football shirts.
Police filmed the anti-EDL protesters as they chanted "fascist scum off our streets" and "follow your leader, kill yourself like Adolf Hitler" before escorting the EDL supporters around Parliament Square.
As the two groups arrived towards Westminster Tube station, the anti-fascists began to run towards the men, forcing the police to set up a cordon to protect them
This footage shows English Defence League (EDL) supporters marching down Whitehall in central London towards Downing Street.
EDL leader Tommy Robinson told the demonstration: "This is a day of respect for our Armed Forces."
The crowd repeatedly chanted "coward" after he claimed Prime Minister David Cameron was on holiday "because he doesn't care".
Mr Robinson added: "They've had their Arab Spring. This is time for the English Spring."
Around 1,000 EDL protesters have made their way along Whitehall before taking a position on the pavement across the road from Downing Street.
A much smaller group of anti-fascist demonstrators gathered opposite them holding an "EDL Racists" banner.
Both sides traded insults but were kept apart by officers and barriers.The EDL supporters chanted: "We hate Cameron."
The EDL demonstrators pushed their way through a police cordon as they made their way to Trafalgar Square.
They chanted "Muslim killers off our streets" and "There's only one Lee Rigby" in tribute to the soldier killed in Woolwich, south-east London last Wednesday.
The protesters held placards that read "Blood on your hands" and "GB RIP".They are expected to demonstrate outside Downing Street later.
The demonstrators marched through Admiralty Arch and onto Parliament Square.
They were escorted by Metropolitan Police officers and vans, while a force helicopter followed overhead.
A Scotland Yard spokesman said Whitehall was closed to traffic because of "a number of demonstrations".