Why did the british soldiers wear what they wore?

I'm not really sure but i do know that their whole kit apparently weighed 60 pounds and helmets hadn't been introduced yet so they wore peeked caps that weighed 2 pounds and each of their boots weighed 5 pounds.

here is a pdf file on the internet that can help

http://www.schoolhistory.co.UK/gcselinks/wars/firstwwlinks/worksheets/soldiersequipment.pdf

use the diagram i hope it helps Xx