Staff Sergeant Julian McDonald was the dog trainer for the regiment in battle. In an interview with National Geographic, he describes the guilt he goes through each day because it was ultimately his decision to send Layka into that battle.
Although the operation to save Layka was a success, it was going to take a long time to help her completely recover, not only due to now only having three limbs, but also her mentality may have been affected by the traumatic events.
However, the most amazing thing was about to happen for Layka. The military handler whose life was saved by her brave actions, had decided to do the same in return. He decided to adopt her in order to give her all the love and reward she deserved.