main battle line

main defense area (line) / main defensive position

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

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

main battle area (MBA)

main battle force

main battle tank (MBT)

intended for direct fire support of advancing infantry and main battle tanks

main battle position

battle-ground / battle ground / battleground

main fighting line

main line of advance

main line of defense (resistance)

outline the main line of defense (of the enemy)

main defense (line) area

battle handover line

line of battle

battle handoff line (BHL)

observer-target line (OT line)

scheme trail line (tag line)

direction of the main blow

main (fighting) force(s)

Main Air Traffic Flow Management Centre (MATFMC)

Main Armaments Directorate of the RF Armed Forces

main attack

main ballast tank

main base

main battery

main blow