During world war i, the second phase in battles that crossed enemy lines and approached trenches was heavy bombardment. sniper fire. aerial bombing. infantry attack.

The correct answer is D) infantry attack.

During World War I, the second phase battles that crossed enemy lines and approached trenches was infantry attack.

Infantry platoons in World War 1 were used to engaging in man to man war in order to capture the enemies’ trenches or capture a site. Foot soldiers were the basic element in the war that was supported by modern machines in those times such as machine guns. Later in the war, tanks appeared and made a huge difference in war strategies. Infantry attacks caused many killed soldiers from the French and English troops, but when the tanks and modern weaponry, they could capture the German trenches.