Granit Xhaka opened the scoring with a long range strike, with Lucas Perez hitting a brace before Alex Oxlade-Chamberlain added further gloss to the scoreline.
As far as The Gunners’ youngsters are concerned, this was a very good evening against a Forest side containing two players from Arsenal’s League Cup teams of yore in Nicklas Bendtner and Henri Lansbury.
Ainsley Maitland-Niles coped well at right-back on his first senior start for the club and won his fair share of aerial duels, while Jeff Reine-Adelaide, who was also involved from the outset for the first time, linked play intelligently and came close to scoring what would have been a fine goal.
Meanwhile, Chuba Akpom was excellent on the left flank and tormented the Forest defence, suggesting he may have found his best position.
There was more good news for the Arsenal academy, with Chris Willock making his competitive senior debut late on, whilst Gedion Zelalem and Krysitan Bielik gained further experience with late run-outs.
Stephy Mavididi and Josh DaSilva were rewarded for their progress at youth level as they made the bench for the first time, where they were joined by Matt Macey and Ben Sheaf.