In what way did the doughboys show great personal bravery?

The doughboys showed personal bravery by staying firm, with cold nerves and determined over their fight in the trenches. It was a dystopian scenario in which they ran against the enemy with barriers, settlements, and an advantage over them.

Explanation:

The doughboys were soldiers covered in dust, mud, earth, clay or simply any type of dust. They were fighters of the great war and because of this, they earned the status of incredibly brave. The great war was the most advanced and horrifying battle ever seen. But the scenarios were trenches. The conditions were awful, always dirty, polluted, and under constant fire. But the major factor of bravery was climbing the wall to run like wind and pray to reach the other wall to climb down and strike the enemy. They didn't know what they faced but hey always climbed the walls to do it.

c it says nothing about connecting those 2 seas.

yes i think there would be volunteers