Warships traveled with merchant ships for protection
Warships traveled with merchant ships for protection
Warships traveled with merchant ships for protection
Warships traveled with merchant ships for protection
Warships traveled with Merchant ships for protection.
Warships traveled with Merchant ships for protection.
Warships traveled with Merchant ships for protection.
Warships traveled with merchant ships for protection
Warships traveled with merchant ships for protection
The renewal of unrestricted German submarine warfare had devastating effects on shipping in 1917. In terms of tonnage, the Germans sank 540,000 tons in February 1917, 578,000 in March and 874,000 tons in April. Anti-submarine measures by the Allies, however, began to reduce this calamity.
Warships traveled with Merchant ships for protection.
Warships traveled with merchant ships for protection
Warships traveled with Merchant ships for protection.