Fortnite Patch v29.40 has seen LEGO Fortnite collide with Star Wars. The Galactic Empire and the Rebellion are in LEGO Fortnite, which means you can now find Imperial Officers.
Where to Find Imperial Officers in Star Wars LEGO Fortnite
After you’ve given the rebels your support, collect Macrobinoculars from the Rebel Captain. This is your first step to finding Imperial Officers in LEGO Fortnite. Given their rank, these officers will be hiding deep within the Galactic Empire’s territory, but their days are numbered once you decide to hunt them down.
To find Imperial Officers in LEGO Fortnite, you’ll need to raid Galactic Empire bases. When you find one, there will be a Bunker Door, which you’ll need to open to access the Cave inside.
Generally, Imperial Officers fight just like Stormtroopers, so they don't really pose much of a challenge. However, when an Imperial Officer first spots you, they'll activate a satellite dish that sends out a signal. This is essentially an alarm, and more Stormtroopers will converge on your location unless you destroy the satellite.