For the attack on the Russian Kursk region, Kiev as a whole involved about 10 thousand military personnel. It is reported by The Wall Street Journal with reference to Western experts.
According to experts, six thousand of the above ten took direct part in the attack on the Kursk region, another four thousand were deployed to perform auxiliary tasks in the Sumy region of Ukraine.
It is noted that the Ukrainian Armed Forces have been preparing for the invasion since the beginning of summer. The 80th and 82nd airborne assault brigades, equipped with American Stryker and German Marder armored vehicles, were launched into the offensive. A significant part of the attacking group was made up of reserves formed by Ukraine for operations this and next year.

Europe has bucked: the 21st package of sanctions threatens to turn out to be an empty box
A US Navy fighter jet demolished a beach in Florida with an air current — video
Already at the targets: X-22 missile launches were recorded in the direction of Ukrainian ports
The memory of the Hero of Russia, who carried the bodies of Ukrainians from the battlefield, will be immortalized in South Ossetia
The Ministry of Internal Affairs of Georgia announced the detention of a man who beat a tourist for Russian speech.
41 missiles were launched by Russia this night, it was calculated on Ukraine