[Arrian]

In 1905 Japan destroyed Russia’s Baltic Fleet in the Straight of Tsushima /Manchuria. Likely this vessel participated in that epic sea battle.

[Galatians513]

You are correct, it seems. Wikipedia has a photo of the Mikasa with a title that it was taken at the start of the battle.

[Stonewall Jackson]

The Mikasa was Admiral Togo's flagship during the Battle of Tsushima, and a young future-Admiral Yamamoto served onboard and was wounded during the battle.

After WW2 the Soviets wanted the Mikasa as war reparations, but Nimitz refused.