The RAF rugby union side have been beaten away to Cambridge University.
The Air Force line-up included some development players, as they look to find their best fifteen for upcoming Inter Services matches.
The hosts took the lead mid-way through the first half through an unconverted Fergus Jeffrey try.
Moments later, the game was stopped when Douglas Russell was knocked unconscious and was stretchered off.
A long break in play was followed by a try for the visitors, as Chris Craig crossed the line to level the scores.
Cambridge, however, went into half time with a seven-point lead, after Mike Phillips' 40th-minute try was converted to take the score to 12-5.
The home side continued to add to the scoreboard in the second half, with a brace of tries for Joey Gatus to leave the RAF 21 points behind.
An interception try by Tom Windiback was mere consolation for the visitors, with Cambridge winning 26-12.
The RAF take on the British Police next week, while Cambridge prepare to welcome both the Army and the Navy to Grange Road over the next month.