03/08/2014 Newsround

I'm Jenny, live with all the news you need to know this Sunday.

Thousands of athletes and officials from 71 nations and territories have

spent the past 12 days bringing the Commonwealth Games to life, and

The Lightning Bolt was back with a bang, helping to set a new Games

record, in the 4 by 100m relay final, before celebrating in style

And diving sensation, Tom Daley, held

on to his ten metre platform title, with this amazing performance.

It's the 20-year-old?s third commonwealth gold.

Tomorrow marks 100 years since Britain declared war on

Germany. Ricky's going to be bringing you a

frontline. Today, he's been finding out about some unusual recruits,

that did their bit for the war effort.

Around the world, millions of men were recruited to

As they travelled to the battlefields of Europe,

women at home took on their jobs in factories,

The British army deployed more than one million horses and mules

during the conflict, their hard work shouldn't be underestimated.

Many of them were used to move around artillery, general supplies,

Dogs played crucial roles in the First World War.

In fact, they came to be just as dependable as soldiers.

Many were used to deliver vital messages, find wounded soldiers

Some even helped to sniff out enemy spies.

Pigeons were also used as messengers.

They flew long distances quickly, delivering military orders to

And one of the most bizarre creatures who came to help

the soldiers, in the sometimes very dark trenches, were glow worms.

They'd collect them in jars in their thousands,

and then at night, when they'd glow, they were able to study maps

At night, their glow is visible, even from as far away as 20 yards.

Away from the frontline, even zoo animals were put to work.

The government wanted to show everyone was helping out.

This elephant, from Sheffield Zoo, was used to pull heavy loads,

instead of the British horses that were on the battlefields of Europe.

Millions of animals were relied upon by both

But like the men sent to fight, the price they paid was high.

8 million horses alone had died by the end of the war, as a result of

the extreme conditions at the front - exhaustion, injury and disease.

But the efforts of animals in WW1 were never forgotten.