AN 'EMPIRE' AT 40: THE REST OF THE 'ROGUE'S!

Wedge Antilles (Denis Lawson) returns to flying as designated Snowspeeder pilot Rogue Three.

Into action against the approaching Imperial Walkers at Echo Station 328 is Commander Luke Skywalker and his small but loyal squadron of Snowspeeders, each double-piloted vehicle of Rogue Flight used to fighting against heavy enemy odds, though this will prove their toughest and most deadly battle yet...

Rogue Leader Luke Skywalker's ill-fated gunner, Dack (John Morton). 

Rogue Two - Zev Senesca (Christopher Malcolm). The character may have had a Walker battle scene/harpoon moment cut from the finished film.

Rogue Three gunner Wes Janson (Ian Liston). 

Rogue Four - pilot Hobbie (Richard Oldfield), whose snowspeeder cockpit scenes were cut from the film, including his kamikaze demise against an AT-AT, though Luke mentions him by name at the beginning of the battle sequence.

Behind the scenes of the Snowspeeder cockpit filming:

https://starwarsaficionado.blogspot.com/2015/12/behind-scenes-grounded-rogues.html

AN 'EMPIRE' AT 40: THE ROGUES GATHER!

Reunited with his team mates of Rogue Flight, Commander Luke Skywalker hops into his Snowspeeder, chatting with his friend and co-pilot Dack (played by John Morton, his voice dubbed in post production), a young man eager and ready to take on the whole Empire himself!

A relaxed Mark Hamill between filming takes.

CLASSIC IMAGE: SPEEDER CRASH

Atop his crashed speeder, Luke Skywalker, seeing the oncoming Imperial Walker, reaches out to get some last minute equipment in this classic scene from THE EMPIRE STRIKES BACK, filmed on location in Finse, Norway in March/April 1979. The body of Luke's friend and co-pilot, Dack, within the speeder would be a prop dummy and not actor John Morton.

UPDATE 24/8/15 

TESB's Norway filming historian Martin Dahl has kindly provided this BTS information: "I just spoke to one of the Norwegian extras connected to the shoot, who stood in for John Morton (as Dack). He got placed in the co-pilot seat during this scene as fit the costume perfectly, and a dummy would move unconvincingly when pulled back (as seen when Luke checks on him and retrieves the explosive device)." 

Thanks for the info, Martin!