Earth's electric field

scorched earth tactics (scorch-earth tactics)

earth-centered earth-fixed coordinate system (ECEF)

Earth's magnetic field

field officer (field-grade officer / senior officer)

combat field pack, field pack

air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen

combination field and field-off duty uniform

electric baton

electric blasting

electric current

electric fence

electric firing circuit

electric flashlight

electric glove

electric power lines

electric power unit (EPU)

electric shock prod

electric spark

electric weapons

Taser (Thomas A. Swift’s Electric Rifle)

photo-electric fuze

electric wiring harness

rammer electric motor

electric brake hand control

electric defroster

electric firing

electric horn

electric indicator lamp

electric system

electric wiper

integrated electric propulsion

fractional electric motor