 The failure of the "Luftwaffe" to identify the radar chain and distinguish RAF fighter bases from those of other RAF commands undermined its ability to destroy the British fighter defences.The "Luftwaffe" underestimated British radar, and they had not realised its importance in the British operational system.To the contrary, OKL believed that the radar stations would benefit the German effort by sending RAF forces into large-scale air battles for the "Luftwaffe" to decimate.