On June 25, 1935, by order of the Minister of Military Affairs L.dz.2621/Tj.org., the Coastal Artillery Division (DAN) was created.
XI (Canet) was stationed at Oksywie and in 1938 was organizationally subordinated to the 1st Marine Anti-Aircraft Artillery Squadron in Gdynia.
During the alarm mobilization in 1939 in the green group, the division additionally mobilized the following subunits in Hel: in Jastarnia: in Władysławowo: Due to the shortage of coastal artillery and the need to provide direct protection of the approaches to the ports in Jastarnia, Władysławowo and Hel, at the end of 1938 the organization of new batteries in Division was undertaken.
The guns for the batteries being organized were in the warehouses of the Fleet and the Riverine Flotilla in Gdynia, Modlin and Pinsk.
After the outbreak of the war, in order to further strengthen the anti-landing defense, improvised batteries and platoons were formed from the Fleet personnel and artillery equipment obtained mainly from disarmed and sunken vessels of the Fleet:[1]