maintenance level

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

I-level training (Intermediate Maintenance)

Intermediate Maintenance (I-level) (in centrally located facilities within a designated geographical area)

contingency maintenance / special maintenance

maintenance checks / routine maintenance, scheduled tasks

maintenance idling (periodic running of engine for maintenance purposes)

routine maintenance / scheduled tasks, maintenance checks

scheduled tasks / routine maintenance, maintenance checks

special maintenance / contingency maintenance

alert level

assigned flight level

barrel bore wear level

base level assessment

counter IED operational / strategic level

cross-level

division level

division-corps-joint-command level

gun’s axis inclination level

High Level Planning Group (OSCE HLPG)

High Level Steering Group

high-level strategic guidance

intelligence staff officer (brigade, battalion & armored cavalry units level) (S2)

laser level

level flight

level of ambition (LoA)

level of command

level of war

level point

level readiness

level to / with the ground

level-crossing = (амер.) grade crossing