-

• 1915 in Finland (1 C)

/

• 1915 disestablishments in the Russian Empire (7 P)
• 1915 establishments in the Russian Empire (5 C, 26 P)

D

• 1915 disasters in the Russian Empire (1 P)

E

• 1915 in Estonia (1 C)

L

• 1915 in Latvia (1 C)
• 1915 in Lithuania (2 C)

N

• 1915 Russian novels (2 P)

• 1915 in Russia

0–9

• Second battle of Przasnysz
• Second Battle of the Vistula River

A

• Battle of Ardahan

B

• Battle of Dilman
• Battle of Łomża
• Battle of Robat Karim
• Battle of Humin-Bolimów
• Bug–Narew Offensive

D

• Attack of the Dead Men
• Deportations from East Prussia during World War I

E

• Battle of Kalvarija

F

• First Battle of Przasnysz
• First Riga offensive

G

• Gorlice–Tarnów offensive
• Great Retreat (Russia)

K

• Battle of Kara Killisse (1915)
• Battle of Konary

L

• Landing at Cape Domesnes

M

• Second Battle of the Masurian Lakes
• May 1915 Triple Entente declaration

N

• Narew Offensive
• Siege of Novogeorgievsk

R

• Battle of the Gulf of Riga
• Russian occupation of Eastern Galicia (1914–1915)

S

• Battle of Sarikamish
• Siege of Kovno

T

• Turkoman Revolt of 1915

V

• Vilno-Dvinsk offensive