Royal Artillery have retained their Inter Corps Rugby Union title in Aldershot.
They came from behind in a thrilling match to beat the Royal Electrical and Mechanical Engineers (REME) 16-15.
This is the sixth straight year that the Artillery have been in the final.
They found themselves behind when Dom Carroll scored a REME penalty, but Artillery full-back Harry Whittington kicked his team level with a penalty of his own.
REME missed two more kicks but managed to score the opening try of the game.
Peek scored the try, using brute strength to power through the Artillery defence for a converted score.
They were soon 15-3 up.
Vaileba cut in off the wing and fed Naulusala who flew over the line for an unconverted try.
The Artillery needed a strong second-half performance and reduced the deficit through Connor O'Riley's unconverted try.
Minutes later, REME led by just two points. O'Riley turned provider and Whittington scored a try to give the Artillery momentum.
Things were building towards a tense conclusion and it was the Artillery who kept their composure.
Whittington scored a penalty to put them in front for the first time, but they soon lost two men in a minute.
Gibbs and Ken Dowding were sent to the sin bin, but the Gunners held on for a 16-15 win.