main line of advance

main defense area (line) / main defensive position

hold advance / hold (up) advance

advance of the main attack

main axis of advance

main tank/ main fuel tank

main gear box / main rotor transmission

main rotor transmission / main gear box

main-rotor head / main-rotor hub

main-rotor hub / main-rotor head

deployment line; line of deployment (LD); line of departure

limit of advance (line)

main fighting line

main line of defense (resistance)

outline the main line of defense (of the enemy)

main battle line

main defense (line) area

observer-target line (OT line)

scheme trail line (tag line)

advance force

advance planning funds (APF)

advance warning

advance, flank, and rear guard

advance-warning satellite

axis of advance

fend off enemy's a advance

maintain the momentum (of the advance)

route of advance

speed of advance

United Nations Advance Mission in Cambodia (UNAMIC)

United Nations Advance Mission in the Sudan (UNAMIS)

zone of advance

advance route