The real significance of the split was between those landed gentry who were prepared to compromise with the royalists as long as their lands and civil rights were guaranteed, and those, such as Owen Roe O'Neill, who wanted to completely overturn the English presence in Ireland. They wanted an independent, Catholic Ireland, with the English and Scottish settlers expelled permanently. Many of the militants were most concerned with recovering ancestral lands their families had lost in the plantations. After inconclusive skirmishing with the Confederates, Owen Roe O'Neill retreated to Ulster and did not rejoin his former comrades until Cromwell's invasion of 1649. This infighting fatally hampered the preparations of the Confederate-royalist alliance to repel the invasion of parliamentarian New Model Army.