The Russian Navy will celebrate its 75th Navy Day on Sunday and one of the biggest celebrations will be in the former Ukrainian, now Russian port of Sevastopol, Crimea.

A lot has changed since Russia's first Navy Day in 1939. At the time, both Russia and Ukraine were part of the Soviet Union and celebrated Navy Day together. Since then, the Soviet Union broke up and the Black Sea Fleet was split between Russia and Ukraine, but in 2012, those two countries decided to begin celebrating Navy Day together again. It turned out to be a short-lived reunion.

This Sunday, Russia again celebrates Navy Day alone. Here's some photos from the Black Sea Fleet's rehearsal and a few from Navy Day 2012, when Ukrainians and Russians joined together to celebrate their strong naval history in Sevastopol.