Early in the month of March, 1866, considerable activity was observable among the Fenians in both the United States and Ireland, and it became known to the authorities that a "rising" was contemplated, to occur on St. Patrick's Day. That a simultaneous raid on Canada had been planned was evident, and as the Government maintained a force of secret service agents in the principal American cities to keep watch on the movements of the Fenians, reliable information was furnished which was regarded of sufficient importance by the Canadian authorities to warrant prompt action in putting the country in a state of defence. Accordingly on the 7th of March a General Order was issued by Col. P. L. Macdougall, Adjutant-General of the Canadian Militia, calling out 10,000 volunteers for active service. The summons was flashed across the wires to all points in the Provinces of Upper and Lower Canada, and fourteen thousand men promptly responded to the call. By 4 o'clock on the following day these forces were all assembled at their respective headquarters, awaiting further orders. So eager were the young men of Canada to perform their duty in those trying times that a force of 50,000 could have been raised as easily as the number called for. Most of the companies and battalions were reported "over strength" when the returns were received at headquarters, and the Government decided to retain the whole 14,000 on service pending developments of the enemy's movements. Lieut.-General Sir John Michel (then commanding Her Majesty's forces in North America) was placed in supreme command, with Major-Gen. James Lindsay in command of the troops in Canada East, and Major-Gen. G. Napier, C.B., in charge of the forces in Canada West. On the 8th of March, the following companies were ordered to report for duty to Major Crawford at Brockville for the purpose of forming a Provisional Battalion:-- Perth Rifle Company--Capt. Edmund Spillman. Gananoque Rifle Company--Capt. Robert McCrum. Carleton Place Rifle Company--Capt. James Poole. Perth Infantry Company--Capt. Thomas Scott. Almonte Infantry Company--Capt. James D. Gemmill. Brockville Infantry Company--Capt. Jacob D. Buell. The above units promptly reported, and the organization of the Battalion was effected by a mergement of them with the Brockville Rifles, which was placed on full service and divided, the right half forming a company of 50 men under Capt. W. H. Cole, and the left half (50 men) placed in command of Lieut. Windeat. Lieut. Robert Bowie was appointed Adjutant of the new Battalion thus created.