A group photo of the 2nd Battery of the 2nd Field Artillery Regiment (2. patteri, 2. kenttätykistörykmentti) in Vyborg, between 1930 and 1933.The officer in black gloves is Oskar Valdemar Mandelin (Oskar Mandelin | Wikipedia - in Finnish) who was the commander of the 2nd Artillery Regiment between 1923 and 1933.
Finland
2. patteri, 2. kenttätykistörykmentti
between the 1930-01-01 and the 1930-12-31,interwar period