the barrage was to shift from the German front line to a protective box barrage around the area occupied by the raiders.
Ten minutes later at 0757 hours, the barrage shifted to the German support lines and a protective box barrage as the 2nd wave proceeded up the German communication trenches entering the support line at Z+24.
the only thing that wasn't "typical Boro" was that it was the opposition left reeling by the penalty box barrage
and a leveller at the death.
What one would term a box barrage
. These were routine nighttime practice firings and I do not know if either of these batteries were successful in downing any enemy aircraft.
My memories go back to service on an anti-aircraft rocket gun site that provided a "box barrage
" over Longbridge and Cofton Hackett when men exempt from military service, advocating a Second Front as keen Marxists, had to be conscripted into the Home Guard.
Five minutes later this fire would switch for 25 minutes to a "box barrage
" designed to cut off the objective from possible reinforcements.