They never left their own country but when they were conducted by a king of extraordinary genius, or found their enemy divided by intestine factions, or were supported by a powerful alliance on the continent; and as all these circumstances concurred at present to favor their enterprise, they had reason to expect from it proportionable success.
The duke of Burgundy, expelled France by a combination of the princes, had been secretly soliciting the alliance of England; [**] and Henry knew that this prince, though he scrupled at first to join the inveterate enemy of his country, would willingly, if he saw any probability of success, both assist him with his Flemish subjects, and draw over to the same side all his numerous partisans in France.
Trusting, therefore, to this circumstance, but without establishing any concert with the duke, he put to sea, and landed near Harfleur, at the head of an army of six thousand men at arms, and twenty-four thousand foot, mostly archers.

He immediately began the siege of that place, which was valiantly defended by D'Estouteville, and under him by De Guitri, De Gaucourt, and others of the French nobility; but as the garrison was weak, and the fortifications in bad repair, the governor was at last obliged to capitulate; and he promised to surrender the place, if he received no succor before the eighteenth of September.

The day came, and there was no appearance of a French army to relieve him.
Henry, taking possession of the town, placed a garrison in it, and expelled all the French inhabitants, with an intention of peopling it anew with English.
* Rymer, vol.ix.p.

303.
** St.Remi, chap.lv.Godwin, p.

65 The fatigues of this siege, and the unusual heat of the season, had so wasted the English army, that Henry could enter on no further enterprise; and was obliged to think of returning into England.