English and French fleets used the sound as a base, stage station and observation point during the war against Russia.

[2] In 1885 work began on fortifications in Slite and Fårösund where artillerymen from Gotland National Conscription and Göta Artillery Regiment were brought.

[3] Through the Defence Act of 1936, the Riksdag decided that a new coastal artillery unit would be raised and based in Fårösund.

In May 1938, the Riksdag decided that SEK 669,000 would be allocated to the construction of service housing at Gotland Coastal Artillery Corps in Fårösund.

The reason for the fact that the unit had a very good proximity to the Stockholm archipelago, with practice and training areas with designed terrain types.

KA 3, however, quickly fell away in the process, as the operations was considered limited and that the unit lacked sufficient and appropriate training areas.

Furthermore, the Government considered retaining KA 4 as giving the Swedish Navy the opportunity to continue operations for the naval warfare units in Gothenburg.

[7] Through the Defence Act of 2000, it was decided at the same time that the Swedish Coastal Artillery would be disbanded and the remaining units would have a different focus.

The organization in 1937 consisted of the following:[4] In the late 1940s, the name of the companies changed to: The VII Military District's 1949 War Organisation for GK/KA 3:[11] The Gotland Coastal Artillery Regiment was based in Fårösund, about 55 km north of Visby.

[2] After the disbandment, the state administration company Vasallen took over the area, with the task of selling or renting the premises to entrepreneurs.

On 15 January 2018, the Swedish Fortifications Agency entered into an acquisition agreement with Fastighets AB Bunge Kronhagen, with the purchase of the naval port in Fårösund for SEK 20 million.

[13] Blazon: "On red cloth in the centre the badge of the former Coastal Artillery; two gun barrels of older pattern in saltire between a royal crown proper and a blazing grenade and waves, all in yellow.

Blazon: "Azure, the provincial badge of Gotland, a ram passant argent armed or, crosstaff and banner gules with edging and five flaps or.