From: Sandviken, Sweden
"Also, if memory serves, by 1972, the B-52D model's ECM was more optimized to combat the SA-2 than the later models of the B-52, and most of what went "downtown" in Linebacker II were the -Ds. That level of hyper-focus is more in line with "Modern Air Power: War Over Vietnam 1972", though."
The B 52D was the model used during the support missions in South Vietnam. They had been upgraded. During Linebacker II the G model was also used, but they had not been equipped with new sensors. So, They took the most losses in the beginning.
Bougainville, November 1,2,3,4,5,6,7,8,9. It rained today.
Letter from a U.S. Marine,November 1943