Gross-Berlin it said on a big yellow road sign that we passed as,in continuous fighting,we moved ever further westward that morning.It was a couple of days after 20 April,Hitler's birthday.We had left behind the wide belt of burning residential suburbs.Big factory blocks towered in front of us,and beyond them we could discern the sea of residential blocks of the giant city.A blue-grey haze lay like a veil over millions of inhabitants.It smothered everything with the dark smoke of vast conflagrations