What is meant by the phrase "seas of mud"?
The trenches were filled with mud.
The rain ran through the trenches like the waves of the sea.
The rain helped clean the uniforms.
The sea was spilling into the trenches.
There was so much mud, and it was almost like the seas due to the largeness of the amount of mud and also the fact the author compares the rain running through the muddy trenches like "the waves of the sea".
