During 1915 and 1917, U-boats attacked not only enemy ships but also
a. troops stationed close to shore.
b. cities near the shoreline.
c. German submarines.
d. commercial supply ships.
During 1915 and 1917, U-boats attacked not only enemy ships but also
a. troops stationed close to shore.
b. cities near the shoreline.
c. German submarines.
d. commercial supply ships.