This chapter retraces the mindset with which troops arrived in East Prussia by examining the behavioural patterns they carried over from the Eastern Front. Most of these men had previously fought in the Soviet Union, and the actions of the troops who fell back into German territory reveals that their frame of reference had been barbarised by their years of war on the Eastern Front. The wider implications of this calloused outlook for what constituted normality – the ‘lowered resting heart-rate of the Wehrmacht soldier’ – were evident during the defence of East Prussia. With the war’s call for the annihilation of ‘sub-humans’, the majority of orders on the Eastern Front encompassed civilians, and it was thus the soldiers’ perception of civilians that had undergone the greatest perversion. This altered attitude towards civilians ensured that the Wehrmacht was increasingly prepared to include German civilians in the defence of their home soil. For the majority of troops East Prussia was the last in a series of defensive battles and the retreat onto German soil did not necessarily signify a change in day-to-day behaviour. As a result, soldiers had little motive, and even less opportunity, to alter their frame of reference.