column gap

time-gap of column

clear / cut a gap

exploit a gap

fill / plug the gap

gap marker

gap-filler radar

hasty gap crossing

seal the gap

secure a gap

time gap

air-gap / air wal

gap crossing operation

constricted air gap spark plug

gap wind

lighting gap

gap filling

gap-filling radar

spark-gap anti-TR tube

spark-gap TR tube

spark-gap transmit-receive tube

spark-gap tube

gap

close the gap

slat gap

armored column / convoy

close column

column (colm)

column formation

column of battalions

column of brigades

column of mercury

march column