why did the young men from newfound land suffer such horrible casualties at thee battle of the somme?

A combination of a compact battlefield, destructive weaponry, and several failures of British military leaders led to the horrible casualties in the Battle of Somme.

Explanation:

The Battle of Somme was one of the worst battles in the History of World War I. Both sides were locked into an extremely small area, which was then pounded by massive amounts of machine gun fire. On just the first day, the British endured more than 57,000 casualties. And by the end of the 141 days in the Battle of Somme, the Allies and Central Powers had suffered more than a million casualties combined.

Regards!

i believe its the indians