vehicles, artillery, rocket launchers, helicopters — all of which, when combined with infantry, can have massive effect but which the russians have failed to master. the russian air force is 15 times bigger than ukraine's, yet they have failed to achieve supremacy in the skies. and finally, there's poor russian logistics and communications. russian soldiers have not always maintained their vehicles properly, meaning that many of them are breaking down. and when it comes to radios, a lot of them don't work, forcing them to use mobile phones which can be easily intercepted by the ukrainians. many of the russian soldiers fighting in ukraine thought they were just going on exercise like this one in belarus. that didn't give them enough time to prepare for battle. exercises never prepare troops properly for combat, so they were not combat—ready, and that puts real strain on the non—commissioned officers, the sergeants and the corporals, to get things ready in time, make sure the troops do theirjob properly. and in the russian army,