In a war between anarcho capitalist society and state, anarcho capitalism is going to developed some marked resemblances to anarcho piratism. Yes, in a war situation property rights, and indeed all rights, are apt to get abruptly trampled, and trampled almost as much by those defending rights as those attempting to crush rights. Against smaller threats, like a criminal gang, probably not so much.
And what is anarcho piratism?
It is what conquered the West Indies, and indeed much of Britains colonial empire, for the British.
It is often said that the Britain acquired the empire in a fit of absent mindedness. What happened was that the British government failed to pay much attention to acts of piracy and brigandage by Britons far away, and then eventually after the pirates and brigands had stolen an empire, the British government moved in on them to take it off their hands.
Similarly, Charles the great would license brigands to rob Muslims, and this was the origin of the multitude of little Christian kingdoms that slowly reconquered Spain.
Oh ! England is a pleasant place for them that's rich and high,
But England is a cruel place for such poor folks as I ;
And such a port for mariners I'll never see again
As the pleasant Isle of Aves beside the Spanish main.
There were forty craft in Aves that were both swift and stout,
All furnished well with small arms and cannon all about ;
And a thousand men in Aves made laws so fair and free
To choose their valiant captains and obey them loyally.
Then we sailed against the Spaniard with his hoards of plate and gold,
Which he wrung with cruel tortures from Indian folks of old ;
Likewise the merchant captains, with hearts as hard as stone,
Who flog men and keelhaul them and starve them to the bone.
Oh ! palms grew high in Aves, and fruits that shone like gold,
And the colibris and parrots they were gorgeous to behold,
And the negro maids to Aves from bondage fast did flee
To welcome gallant sailors a sweeping in from sea.
Oh ! sweet it was in Aves to hear the landward breeze
A swing with good tobacco in a net between the trees,
With a negro lass to fan you while you listened to the roar
Of the breakers on the reef outside which never touched the shore.
But Scripture saith an ending to all fine things must be,
So the king's ships sailed on Aves and quite put down were we.
All day we fought like bull dogs, but they burnt the booms at night,
And I fled in a piragua sore wounded from the fight.
Nine days I floated starving, and a negro lass beside,
Till for all I tried to cheer her the poor young thing she died.
But as I lay a gasping a Bristol sail came by,
And brought me home to England here to beg until I die.
And now I'm old and going : I'm sure I can't tell where.
One comfort is, this world's so hard I can't be worse off there.
If I might but be a sea dove, I'd fly across the main
To the pleasant Isle of Aves to look at it once again.