Operation Kilpapurjehdus ("Regatta") was the covername for the militarization of the Åland islands during World War II.
The operation took place on June 22, 1941, and in this way, Finland strived to prevent Soviet landings in the area.
Although during the night they stopped on the border of the territorial waters to await confirmation of the German attack on the USSR, and after it was received at 4:30 the movement continued.
On the same day, the Finnish military illegally invaded the Consulate of the Soviet Union in Mariehamn and arrested the entire consular staff numbering 31 people, and soon they were deported to the city of Turku.
On the day of signing the Anglo-Soviet Agreement, July 12, 1941, the 14th Infantry Regiment is sent from Åland to reinforce Operation Platinum Fox.