Ben Mendelsohn and Andy de la Tour lend their voice talents to Orson Krennic and Hurst Romodi respectively, their characters from Rogue One: A Star Wars Story (2016). The character of Romodi first appeared as an unidentified Imperial officer in the Death Star briefing room seen in the original Star Wars: Episode IV - A New Hope (1977).
First onscreen appearance of Grand Moff Tarkin's home world, Eriadu, a name first mentioned in the Star Wars Legends Imperial Sourcebook released in 1989.
The Imperial officer Barton Coburn was first seen serving in the Republic Navy in Citadel Rescue (2011) and made various appearances in that series.
The Aurebesh text on Echo's viewscreen in the Marauder's cockpit translates to "Eriadu", with the following text scrolling underneath: "Atmosphere optimal - ter-restrial hab-itable, breathable biosphere, mix of land and water, vege-tation sporad-ic, primary ter-".
When Echo plugs into a monitor, the Aurebesh text on the viewscreen reads "crane A71220V81". The information on the right hand side of Tech's viewer translates to "Analysing camera is offline no activity detected".