On the 18th February the fleet came into collision with the Dutch at the Battle of Portland. On that occasion Blake and Deane, two of the original Generals at Sea, were embarked together in the flagship of the Red Squadron, which flew the standard, but Monck, who had recently been appointed as the third General in the vacancy caused by the death of Popham, took command of the White Squadron, while Penn, the Vice-Admiral of the fleet, commanded the Blue. The Admiral's flags, other than the standard, were "clear" colours, in other words plain flags, but the pendants and ensigns all had "a red cross in chief." The Vice- and the Rear-Admiral of the Fleet, who acted as Admiral of the Blue and Vice-Admiral of the Red respectively, probably flew, in addition to their plain blue and red flags, the Commonwealth "Union" flag of the cross and harp, but about this time the latter flag seems to have lost its red and yellow border and to have been of the same form as the "Jack." Thus in an order dated 2nd March for a further supply of flags to be hastened to the fleet, then re-fitting for a renewal of the conflict, these flags are described as "of ye Jack colours[272]." 3 Standerds of ye usuall colo^{rs} w^{th} ye field Red 4 fflags of ye Jack colors 6 fflags cleare white 6 fflags cleare blue 40 pendants red } 40 pendants blue } 40 pendants white } as ye last was w^{th} the red crosse in chiefe[273] 40 Ensignes red } 40 Ensignes blue } 40 Ensignes white } 100 Jacks At the Restoration the standard and jack flags reverted to the forms in use before 1649. The existing method of displaying the admirals' flags and the precedence of the squadronal colours remained unaltered, but a more strict regulation of their use gradually makes itself felt, and precise instructions as to the wearing of their flags begin to appear in the commissions of appointment issued to the flag officers. This was no doubt the logical outcome of the improved methods of naval administration, and especially of such improvements in the status of officers as the establishment of "Half-pay," of the introduction into the fleet of suitable youths with the express purpose of training them as officers, and the institution of qualifying tests before promotion to the rank of lieutenant. All these reforms tended to make the navy a regular profession for its higher officers instead of a mere haphazard calling, but it must be remembered that as yet the only established "Flag" ranks were those of Lord Admiral and Vice- and Rear-Admiral of England (or "of the Fleet"). All other Admirals were only "occasional," and officers holding such "occasional" rank yielded up the dignity on hauling down their flag and may frequently be found serving later as simple "Captain."