Commanding victories over their rivals in Portsmouth saw them seal the 40-over honours.
Having been pushed all the way by the Royal Air Force in the final of the Twenty20 competition earlier in the campaign, the Reds travelled south expecting another tough test in the longer format.
However, that challenge failed to materialise as the Royal Navy were easily despatched, while the RAF failed to hit the same heights as in their last encounter.
Bowling first against the senior service, the soldiers’ cause was boosted by a slick fielding performance that included four run outs. Maj Mel Vaggers (AGC (SPS)) was the pick of the bowlers with figures of 2-16 as the navy finished on 95-9. The run chase proved a formality as the army reached their target in the tenth over, with LCpl Georgie Cant (Int Corps) 55 not out.
She continued to fire against the RAF as she smashed 77 from 58 balls before perishing, ending an opening stand of 116 with sister Capt Connie Cant (RA).
The latter was later run out for 51 but SSgt Amanda Potgieter (REME, 73 not out) and Vaggers (49 not out) continued the momentum with a partnership of 106 as they closed on 268-2.
In reply, skipper AS1 Molly Rebanks played a starring role with a knock of 82, but with support failing to materialise the RAF were made to suffer. Only one other batter made it to double figures as the bowlers shared the wickets, while three further run outs helped the army to a win by 100 runs.
“The RAF had some brilliant batters, but we knew if we put on a big score we’d be asking them to come out and perform – that put all the pressure on them,” said Georgie Cant.