passage of forward lines

forward friendly lines passage

forward passage of lines (FPOL)

passage of rearward lines

effect the passage of lines

rearward passage of lines (RPOL)

rearward friendly lines passage

passage through friendly lines

passage of lines

exterior lines (див. interior lines)

interior lines (див. exterior lines)

forward observer (FO), forward observation officer; (artillery) observer / spotter

high risk passage

innocent passage

lubricating passage

night passage (naut.)

passage (naut.)

passage registration

passage lane

sea-lanes passage

area of passage

blocked-off passage

dispersal of amphibious group on passage

gas passage

return passage

rearward passage

rearward passage of the covering force

clear а passage

passage allowance

passage of arms

passage of command

passage of information

passage of orders