Complex sentence: The first Women's Guards units, formed in early February in Helsinki, Vyborg and Valkeakoski, were modeled on the Women's Battalions of the 1917 Russian Revolution.
Split into simpler sentences: The first Women's Guards units were born in the early days of February in Helsinki, Vyborg and Valkeakoski. The model came from the Women's Battalions of the 1917 Russian Revolution.