Krasnov's relations with the Volunteer Army became strained on account of his pro-German views; furthermore, he was only willing to have the Don Cossacks serve with the Volunteer Army if he was made Supreme Commander-in-Chief of all the White forces, a demand that was rejected. As the Don Cossack Host outnumbered the Volunteer Army until the summer of 1919, the Volunteer Army's commander, General Anton Denikin (in office 1918-1920), was at a disadvantage in his negotiations with Krasnov. Members of the White movement generally saw Krasnov as a petty and self-interested warlord, only willing to act if there was something of benefit to him on offer. Throughout the Russian Civil War, the Don Cossack Host kept its own identity, with the Don Cossacks serving under their elected colonels in their own regiments, apart from the rest of the White armies. Krasnov wanted Denikin to advance on and take the city of Tsaritsyn (modern Volgograd) on the Volga to end the possibility of the Soviet Red Army entering the Don region, a demand that Denikin opposed. Krasnov so desperately wanted to secure Tsaritsyn that he even offered to have Don Cossacks temporarily serve under Denikin's command if he was willing to advance on Tsaritsyn, but Denikin had other plans.