Book by Doctor of Historical Sciences, Professor G.G. Frumenkova is a revised and expanded edition of the brochure “Solovetsky Monastery and the Defense of Pomerania in the 16th–19th centuries”, published by the Arkhangelsk book publishing house in 1963. Based on numerous archival and printed sources, the author restores the military history of the Solovetsky monastery-fortress, enthusiastically talks about the heroic the struggle of the Pomors against foreign invaders for the honor, freedom and national independence of our Motherland.