Sweden occupied the undefended Norwegian province of Jemtland, which was quickly reconquered by a counterattack by forces under command of the Norwegian governor of Trøndelag. The forces were unwilling to launch a counterattack on Swedish land. In 1564 the Swedes marched under Claude Collart and re-occupied Jemtland, as well as Herjedalen and Trøndelag, including the city of Trondheim. Initially facing little opposition from the locals, their subsequent ill treatment of the Trøndelag natives, along with tax pressure, laid the groundwork for later resistance to Swedish invasion. Also, Trøndelag was assisted by the governor of Bergenhus, Erik Rosenkrantz, who forced 3500 local peasants to assist him and his 50 professional soldiers. The Swedes saw Bergenhus as their next target. Although the 400 Swedish soldiers were repelled from Trøndelag, Sweden continued to occupy Jämtland and Härjedalen. These provinces were later regained by Denmark-Norway following the peace process in 1570. Sweden also launched attacks towards Eastern Norway. In the south-east Sweden captured Båhus Fortress, but lost it in 1566. Another part of the army marched through the valley Østerdalen in 1567, captured Hamar and continued towards Oslo. They reached as far as the Skiensfjord, and torched Skien at one point. In Oslo, however, citizens torched the city before invaders could seize it. From the south-east, more Swedish forces were then sent to aid in capturing Akershus Fortress near Oslo. These forces torched Konghelle and Sarpsborg on their way. They were repelled from Oslo by local forces together with men belonging to Erik Rosenkrantz and the King of Denmark and Norway. The Swedes retreated in a north-eastern direction, torching Hamar on their way, destroying Hamar Cathedral and the bishop's fortified palace Hamarhus.

Question: What year did the events begin?
Answer: 1564

Question: How many years did the events take place?
Answer: 6

Question: Which was captured by Sweden earlier, the Båhus Fortress or Hamar?
Answer: the Båhus Fortress

Question: How many provinces did Sweden occupy in 1564?
Answer: 3

Question: How many more peasants were there than the soldiers that they had to assist?
Answer: 3450

Question: How many years passed between the Swedes marching under Claude Collart and marching through the valley Østerdalen?
Answer: 3

Question: Which was captured first, Hamar or Akershus Fortress?
Answer: Hamar

Question: Which happened first, being repelled from Oslo or repelled from Trøndelag?
Answer: Trøndelag

Question: What city did the Swedes burn?
Answer: Skien

Question: How many cities did the Swedes re-occupy in 1564?
Answer: 4

Question: When did the Swedes capture Hamar?
Answer: 1567

Question: After the Swedes re-occupied Jemtland in 1564, how many years did they control it before it was regained by Denmark-Norway?
Answer: 6

Question: How many years did the Swedes control Jamtland and Harjedalen?
Answer: 6

Question: How many fewer soldiers did Rosenkrantz have than the Swedes?
Answer: 350

Question: Which city did Sweden capture first, Hamar or the Bahus Fortress?
Answer: Båhus Fortress

Question: Which cities were captured by the Swedes when they marched under Claude Collart?
Answer: Jemtland

Question: How many were the 3500 local peasants forced to help?
Answer: 51

Question: Which cities were torched by the Swedes?
Answer: Hamar

Question: Which had a bigger army, Erik Rosenkrantz or the Swedish army?
Answer: Erik Rosenkrantz

Question: Which cities had men fighting for Erik Rosenkrantz?
Answer: Trøndelag

Question: How many years after the Swedes marched under Claude Collart and re-occupied Jemtland were provinces regained by Denmark-Norway following the peace process?
Answer: 6