The Dominions team — captained by the New Zealander Martin Donnelly and stocked with Australian, South African and West Indian servicemen — had drawn level in the unofficial Victory Tests against the Australian Services XI. Their fixture against an England side captained by Wally Hammond at Lord's between 25 and 28 August 1945 was set up as a celebration match. Miller, a 25-year-old RAAF Mosquito pilot still in uniform when he took the field, had already made 26 in the first innings before being run out by Keeton.
In the second innings, with the Dominions chasing a notional lead, he came in at 70 for 3 in the late afternoon of the second day. By stumps he was 61 not out. On the morning of the third day, with the great leg-spinner Doug Wright, Eric Hollies and Bowes operating, Miller scored 124 in 99 minutes. Of the seven sixes, the most famous landed on the upper deck of the pavilion, level with the press box — Sir Pelham Warner described it as 'the biggest six I have seen at Lord's in fifty years'. Another, off Hollies, was still rising when it cleared the press-box roof and dropped into Block Q outside the ground.
He was eventually caught Hammond bowled Pope for 185 made out of 222 in 165 minutes at the crease, with 13 fours and 7 sixes. The Dominions made 336, set England 357 and bowled them out for 311 to win by 45 runs. Hammond made a hundred in each innings for England and Donnelly 133 for the Dominions, but it was Miller's innings that filled the next morning's papers from London to Sydney.