Another cause of the hostility shown by the Indians toward the Americans was the constant irritation created in their minds after treaties had been concluded. These treaties, though formally agreed to by the chiefs representing their tribes, were often regarded by the Indians as without validity for one reason or another. Indeed, the Indians were not without grievances against the Americans, some real and others conjured up and distorted by wrong-headed leaders among them. Added to this was the difficulty of restraining the squatter and the bushranger, who defied all treaties, trampled upon the rights of the Indians, and disregarded the treaty obligations of the Government. The frontiersman had scant consideration for the red man, whom he looked upon as his natural enemy and the principal obstacle to his safety and well-being. This feeling constituted a natural antagonism which was not allayed until the final removal of all the tribes to Government reservations many years later. In the summer of the year 1812 the officers on duty at Fort Dearborn were Captain Nathan Heald, the commanding officer; Lieutenant Linai T. Helm, Ensign George Ronan and Surgeon Isaac Van Voorhis. Captain Heald was at that time thirty-seven years old and the other three officers were all well under thirty; Ronan was the youngest of them all, having graduated from West Point only the year before. The force composing the garrison consisted, according to Captain Heald's own account written a couple of months afterward, of sixty-six enlisted men, fifty-four of whom were regulars, and twelve militia. In addition to these there were nine women and eighteen children. This makes a total, including the officers, of ninety-seven persons. Some accounts, however, give a different enumeration, but we shall make no attempt to reconcile them, as the variations are not many. The news that the United States had declared war against Great Britain was received at Fort Dearborn on the seventh day of August, 1812. This was fifty days afterwards, and it had taken this long time for the news to reach the remote post on the frontier. The authorities at Detroit, however, had been informed some three or four weeks before the messenger was finally despatched to Fort Dearborn. If word had been sent as soon as received at Detroit, there is no reasonable doubt that timely measures might have been taken to prevent the terrible disaster which followed. The despatches containing this important announcement were brought by a chief of the Potawatami tribe named Winnemeg, also called Winamac, who was friendly to the Americans and sent by General Hull to Captain Heald.