British warplans against Norway:
On July 25, 1942, three days after the Norwegian declaration of war, the Royal Navy launches Operation Wilfred, extensively mining Norwegian territorial waters. The Admiralty also begins making plans of a possible invasion, which are presented to Prime Minister Attlee on July 27, as Plan R 4. The plan is to send Royal Marines into Norwegian ports in ships posing as neutral cargo vessels. The marines will storm out of the transports and seize the ports as quickly as possible, thus establishing beachheads from where to deploy more troops and capture inland cities. After that, it was presumed that Norway would collapse and submit to a British occupation, crippling the German steel supply. There was a major problem with the plan, though: Sweden was not considered.
First, the Swedish home guard had been stationed in the very ports from where the British were to launch the assaults, and together with the Norwegian home guard they were most certainly to outman the Royal Marines in the ships. Thus the landings would be a good deal more difficult than the British expected. Second, Sweden had railroads on which to freight the iron ore to ice-free ports, and then transport it the rather short way from Sweden across the Baltic to Germany. Thus the Germans would still have a supply of iron for its steel industry, and the invasion of Norway would do little except tie up British resources and leave the United Kingdom itself with less defences in the face of a possible German invasion.
As the British did not know about the first problem and did not even consider the second, and so the plan is accepted by Attlee and the Cabinet, and put to work immediately.
Battle of Seinäjoki:
On July 28, 1942, the Swedish Army fights a battle outside of Seinäjoki. This time the Finnish outnumber the Swedish slightly, and despite older tanks and firearms manage to drive the Swedes out of the city. After the defeat, the 3rd and 5th Armoured Regiments of the Swedish Army move to cut off the city's supply lines, while the infantry recovers and plans a second attack as soon as the tanks return.
Soviet Progresses:
By the end of July, the Red Army has managed to capture a large area of land, mostly in the south of Finland. A pocket of resistance still holds out at Kotka, and the Soviets are sieging the city, shelling the people in it with both naval and field artillery. The Finnish armies inside have taken a heavy beating, and would soon surrender. Further north, the Soviets have captured Kuopio, S:t Michel, and Lahti and are within striking distance of Borgå and Jyväskylä.