Several days after the battle, the British realized the Bulgarian fortifications were quiet. The Greek and British forces advanced only to find the Bulgarian positions abandoned. The Serbs, French, and Greek forces had defeated part of the Bulgarian army during the Battle of Dobro Pole in the Vardar valley and were advancing towards Doiran. This prompted the command of Army Group Scholtz to order the Bulgarian First Army to retreat so that it would not be cut off from the rear. The British were weary and pursued slowly, and Bulgarian rear guards fought well enough to allow the rest of their troops to get away. The British Royal Air Force did attack the retreating Bulgarian columns, inflicting some casualties.