For nearly two years the garrison at Michilimackinac lived in peace.  In the spring of 1763 they were resting in a false security.  Captain George Etherington, who was in command, heard that the Indians were on the war-path and that the fort was threatened; but he treated the report lightly.  It is noteworthy, too, that Henry, who was in daily contact with the French settlers and Indians, and had his agents scattered throughout the Indian country, saw no cause for alarm.  But it happened that towards the end of May news reached the Indians at Michilimackinac of the situation at Detroit, and with the news came a war-belt signifying that they were to destroy the British garrison.  A crowd of Indians, chiefly Chippewas and Sacs, presently assembled at the post.  This was a usual thing in spring, and would cause no suspicion.  The savages, however, had planned to attack the fort on June 4, the birthday of George III.  The British were to celebrate the day by sports and feasting, and the Chippewas and Sacs asked to be allowed to entertain the officers with a game of lacrosse.  Etherington expressed pleasure at the suggestion, and told the chiefs who waited on him that he would back his friends the Chippewas against their Sac opponents.  On the morning of the 4th posts were set up on the wide plain behind the fort, and tribe was soon opposed to tribe.  The warriors appeared on the field with moccasined feet, and otherwise naked save for breech-cloths.  Hither and thither the ball was batted, thrown, and carried.  Player pursued player, tripping, slashing, shouldering each other, and shouting in their excitement as command of the ball passed with the fortunes of the game from Chippewa to Sac and from Sac to Chippewa.  Etherington and Lieutenant Leslie were standing near the gate, interested spectators of the game; and all about, and scattered throughout the fort, were squaws with stoical faces, each holding tight about her a gaudily coloured blanket.  The game was at its height, when a player threw the ball to a spot near the gate of the fort.  There was a wild rush for it; and, as the gate was reached, lacrosse sticks were cast aside, the squaws threw open their blankets, and the players seized the tomahawks and knives held out in readiness to them.  The shouts of play were changed to war-whoops.  Instantly Etherington and Leslie were seized and hurried to a near-by wood.  Into the fort the horde dashed.  Here stood more squaws with weapons; and before the garrison had time to seize their arms, Lieutenant Jamette and fifteen soldiers were slain and scalped, and the rest made prisoners, while the French inhabitants stood by, viewing the tragedy with apparent indifference.