Republican presidential candidate Mitt Romney promised Monday to maintain an American military “with no comparable power anywhere in the world.”

The likely Republican presidential nominee faced a San Diego crowd estimated at 5,000 in what was billed as a Memorial Day service paying tribute to the nation’s war dead, not a campaign rally. The appearance came the day before Romney was expected to win enough delegates to claim his party’s nomination, a formality that cements his status as President Barack Obama’s general election opponent.