Ukraine and Russia are constantly trying to innovate on the battlefield to maintain their advantages, and one commander says that's a difficult environment for traditional manufacturing contracts.Wolfgang Schwan/Anadolu via Getty ImagesA commander in Ukraine's 14th UAV regiment said combat drone tech can change in a month.One example is the evolving need for new hardware to counter jamming techniques, he said.Military contracts like a three-year agreement wouldn't be able to fulfill those demands in time, he said.A Ukrainian commander overseeing a drone battalion said the speed at which his decentralized manufacturers can alter their battlefield tech gives them an edge over traditional defense production lines."We say to them: 'Here, after three months, this antenna no longer works, this GPS module no longer works.' We tell them: 'This and this needs to be changed,'" said a battalion commander for the 14th Unmanned Aerial Vehicle regiment to the Ukrainian military channel ARMY TV."They say: 'No problem.' And in one month, on the dot, they implement it," added the commander, referring to drone producers in Ukraine.