That battle was the battle of Plevna in 1877 during the Russki-Turkish war.
The Russkies and Romanians advanced on the outnumbered Turkish trenches above Constantinople , who began to come under fire at greater than 2000 yards from the Turks .45 single shot Peabody-Martini's. At 200 yards they put these rifles down and picked up .44 Winchester lever action rifles that were taken from (disbanded?) cavalry units and mowed down the Russkies.
A lot of American Iron in this war - I recall the Turks used alot of civil war Springfields that were bought from the Germans, who captured them from the Frogs in 1870, who bought them from the US. The Russkies used Colt Berdan rifles and others.
The Russians did later buy Winchester lever actions in 7.62 rimmed, who used them in WW1, their civil war, and against the Germans again in ww2!
Interesting war from the history buff's standpoint with all the surplus iron, geopolitics of Europe, Ottoman finances and politics, etc.
Anyways, I understand that lever actions did not see much military use due to the poor camming forces, open and closed, inherent in lever actions. Military ammo used may be dirty or muddy, extraction problems due to sustained firing, etc.