I believe that's done easily enough by providing enough of the ambulances. The ones in poorer condition could be used as spare parts for the other ones until the new ones got built and arrived.
We also have brand new Role 3 mobile hospitals that were bought. I think a dozen of them were bought for the pandemic but never even taken out of the container. Would the brand new Role 3 hospitals be helpful to ensure that those who have significant and traumatic injuries are treated more quickly at the Ukrainian front line?