It is because of the manpower shortage that, credit due, the Ukrainians have come with many innovative ways to use Drones in the ongoing war. But anyone who says Ukraine's military doesn't have a manpower shortage is either ignorant, misinformed or deluded - quite recently Ukraine announced that they would now be recruiting even 60 years old ( https://www.dw.com/en/ukraine-zelenskyy-signs-law-for-over-6... ). You do not hire old people to fight in a war unless you are desperate. Relying on drone warfare for defence however is still a short-term measure because the Russians too are learning from the Ukrainian and adapting accordingly ( https://edition.cnn.com/2025/11/22/europe/russia-rubicon-uni... ).