Men walk against skyline Ypres WW1
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How people went to the toilet in WW1 trenches

2 August 2014 Last updated at 10:16 BST

Soldiers lived in the trenches when fighting during WW1, it was muddy, noisy and pretty basic.

They didn't have toilets so it was probably a bit stinky too.

Ricky's been to a trench in Belgium to find out more, including how they went to the toilet.