The limited lodgements would remain viable only while the Royal Navy could support them, so they are bases for maritime control rather than springboards for conquering Germany. A naval division could reinforce two army divisions, and the nearby positions could receive support from one concentrated fleet. Their value lies in severing German access to Swedish imports and allowing Allied convoys to reach Russian Baltic ports. British ships could also bombard coastal shipyards and complicate German submarine construction. The threat of further landings would force Germany to station more soldiers along the Baltic coast. Those troops would then be unavailable against Russia in the east or Britain and France in the west. The Russian Baltic Fleet could become more active under the protection of a large allied presence. The small occupied area could therefore produce effects out of proportion to its size.
Chapter · 1:22:56-1:26:57
What a Baltic blockade would do to Germany
Holding the western Baltic could cut Swedish trade, open supply convoys to Russia, threaten German shipyards, and pin German troops along their own coast.