The Wall Street Journal published on 6 March 2024 an article titled "Ukraine Is Now Fighting Russia in Sudan" by Ian Lovett, Nikita Nikolaienko, and Nicholas Bariyo.
A group of about 100 Ukrainian commandos are in Sudan fighting on behalf of the Sudan Armed Forces (SAF) against the paramilitary Rapid Support Forces, which has the support of Russian troops originally with the Wagner Group and now controlled by the ministry of defense. The Ukrainian commandos are also training and supplying advanced weapons to the SAF troops.
Comment: The small number of Ukrainian commandos appear to be confined to fighting in the Khartoum capital region where they rarely come in contact with Russian forces who tend to stay out of direct combat and are primarily located in western Sudan.