toy-grade drone

іграшковий дрон (призначений для початківців, зазвичай має найпростіші функції)

hobby drone (hobby grade drone)

tin soldier / toy soldier

grade-ascending ability / grade ascending ability

drone war (world’s first drone war)

drone field of view (drone FOV)

drone swarm attack / drone swarming attack

drone swarm's counter-drone capabilities

one-way attack drone (OWA drone)

company (grade) officers (Co Off)

company grade officers

demote from a grade

down grade (adv)

field grade officers

field officer (field-grade officer / senior officer)

junior grade officers

level-crossing = (амер.) grade crossing

lieutenant junior grade

mid-grade officers

promote to a grade of

revert to a rank / to the grade of

temporary grade

warrant officer grade I

military-grade filter

ascending steep grade

commercial grade