The young Bees conceded two first half goals, and despite showing glimpses of good moments, they were unable to get themselves back into the game.
It was a game where Brentford B started relatively brightly with some good passages of play and they threatened when a Lachlan Brook free-kick found Gustav Mogensen but his header was saved by the Town keeper.
A few minutes later, Nathan Shepperd was forced into his first save when he pushed away a powerful effort, whilst Giles Phillips shot wide of goal.
As the half wore on the National League side began to push forward as they provided a real aerial challenge for the young Bees to deal with. James Harris crashed an effort off the post before Jake Andrews got in behind the back line but couldn’t keep his effort on target.
The opening goal came on 26 minutes when Brentford B were dispossessed in defence and Jacob Berkeley-Agyepong put the side ahead with a composed finish.
Neil MacFarlane’s group almost got themselves level when good work down the right from Wraynel Hercules saw him cut the ball back for Brook to shoot low, but once again the attempt was saved.
Eight minutes before the break Aldershot got their second as play down the right saw the ball crossed low for Andrews to slot home from just a couple of yards out as Brentford B went into the break with an uphill challenge.
There were fewer chances after the break with Aldershot content with their two-goal lead. Though Brentford B looked to get on the ball more and make things happen there was perhaps a lack of execution rather than spirit in the group.
A really good moment came just before the hour mark which could well have changed the rhythm of the match as a Dom Jefferies cross found substitute Nathan Young-Coombes unmarked, but his glancing header edged just wide.
15 minutes from time Shepperd saved well from an Aldershot free-kick as the match finished 2-0.
Aldershot Town: Walker, Lyons-Foster, Kinsella, Harris, Lokko, Phillips, Berkeley-Agyepong, Edser, Akanbi, Oxlade-Chamberlain, Andrews
Subs: Fowler, Trialist, Saunders, Watts, Willard
Brentford B: Shepperd, Russell, Hockenhull (Trialist, 60) Gordon, Jefferies, Oksanen (Trialist, 60) Hercules, Adams (Gilbert, 60) Brook, Trevitt, Mogensen (Young-Coombes, 55)
Subs: Winterbottom, Oyegoke