 Determined to retake Gogland, the Finns concentrated a three battalion strong force to the nearby Haapasaaret Islands, which are roughly 20 km NNE of Gogland.Finnish forces were under command of Major General Aaro Pajari and consisted of the second battalion of the 6th Infantry Regiment, or II/JR 6, and the first battalion of the 27th Infantry Regiment, or I/JR 27, and the whole of the 2nd Coastal Battalion (RP 2) supported by the mortar and anti-tank gun companies of the 6th Infantry Regiment, 3rd company of the 23rd Engineer Battalion, 1st Battalion of the 19th Field Artillery Regiment (total of 12 guns), and two artillery batteries (total of 8 guns).The strength of the Soviet garrison was roughly 500 men but it lacked artillery, which meant that the garrison had to fight without support, while the Finns had artillery and air support.