Dropped from Bombers to Blind Radar

Original strips of tinfoil, the so-called “chaff,” which were dispersed from aircraft to disrupt German radar and other detection equipment.

Handwritten on the (period) envelope:
“Dropped to divert enemy aircraft detection apparatus.”

Chaff was widely used by the RAF and Allied forces from 1943 onwards to confuse German radar systems, particularly during bombing raids and night operations.

This type of chaff played a crucial role in large-scale operations such as bomber raids over Germany, where it helped reduce losses by overwhelming radar defenses.