This is the Main Title from the OST of EU4

Europa Universalis 4 Soundtrack - Main Title - Andreas Waldetoft

Civilization V - French Declaration of War

Civilization V - Japanese Declaration of War

Red Orchestra 2 - Heroes Of Stalingrad Soundtrack - 11 - Pursuit Of Pavlov

March to the Front (Hearts of Iron 2 Soundtrack)

Hearts of Iron III - Achtung Panzer! (Paradox Interactive Music Hits! - Platypus Edition)

Throne Of Stars

Chinese military marches：When that day comes

Europa Universalis IV Soundtra

The Sound of Summer - Europa Universalis 4

Its from a game I play. It has some great soundtracks and some good ringtones if you find one your friend or loved one believes is theirs. My personal favorite is Storm Clouds over Stalingrad

Red Orchestra 2 - Heroes Of Stalingrad Soundtrack - 13 - Impenetrable

Source: https://www.youtube.com/watch?v=lJqlNsGLmGs

America Theme - Atomic (Civilization 6 OST) | Hard Times Come Again No More

Civilization V - French Declaration of War

Civilization 5