Gills manager Mark Stimson told BBC Radio Kent: "He's been brilliant. We need more strikers if we are to score the goals to keep us in this league."
Brandy has scored twice in nine games for the Gills and returned from injury in Saturday's 3-1 defeat by Swindon.
He had been back with his parent club for treatment on a thigh injury picked up last month.
"He hasn't trained and we haven't seen him since the Brentford game [on Boxing Day]," said Stimson.
"He's done a lot of light training but it's all been indoors in Manchester. He said he wanted to go on the bench, and he got on but his ankle is not 100% right.
"It could have been his last game we had to try toget something out of the game so we put him on."
There is commentary of Accrington v Gillingham on Tuesday 19 January on BBC Radio Kent 96.7 104.2 FM and online at bbc.co.uk/kent
Source: BBC Sport
Source: BBC Sport