0002044009 2026-09-11 2026-09-11 0002044009 aaciu:UnitsEachConsistingOfOneClassAOrdinaryShareAndOneHalfOfOneRedeemableWarrant2Member 2026-09-11 2026-09-11 0002044009 aaciu:ClassAOrdinarySharesParValue0.0001PerShare1Member 2026-09-11 2026-09-11 0002044009 aaciu:WarrantsEachExercisableForOneClassAOrdinaryShareAtAnExercisePriceOf11.50PerShareMember 2026-09-11 2026-09-11 GRAND CAYMAN false 0002044009 8-K 2026-09-11 ARMADA ACQUISITION CORP. II E9 001-42661 98-1815892 382 NE 191 St Suite 52895 Miami FL 33179-3899 (786) 548-1886 true false false false Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant XRPNU NASDAQ Class A ordinary shares, par value $0.0001 per share XRPN NASDAQ Warrants, each exercisable for one Class A ordinary share at an exercise price of $11.50 per share XRPNW NASDAQ true false