Battle of Orel
The Red Communist forces were led by Aleksandr Yegorov. The Whites Russian forces were led by Vladimir Mai-Maevski. The Communist forces were defeated and the Whites Russian forces under Mai-maevski occupied the city.
Mai-maevksi volunteer army had access to 5 tanks, armoured trains, armoured cars and artillery, however the slower moving forces were largely not involved at Orel, as they were left behind by the faster moving general columns
This was the closest the White Russian forces got to Moscow in the Russian civil war, they were turned back after this and retreated.