The United States “DELTA” Command and Control System is the computer network that the US uses for battle operations.
It is constantly updated by military planners and intelligence sources with troop deployment info, weapons stock info, and complete attack plans.
Russia has HACKED it; Ukraine’s battle plans totally compromised.
Equally important, the DELTA system is also constantly updated with information about the OPPOSING forces, in this case, Russia.
Here is what a Russian computer Hacker got access to, with videos proving he got access, and how it is likely to be dispositive of the entire Ukraine war, in Russia’s favor: