The British Army that set out to besiege Fort Niagra consisted of 2400 Officers and men organised thus:
1330 men from the 44th and 46th Regiments.
200 men from the Light and Grenadier Companies of the 4th\60th Regiment
Two composite battalions from the New York provincial regiments organised into five companies each.
30 personnel from the Royal Artillery
Colonel William Johnstone had organised 600 warriors of the Six Nations to accompany the British Army, whilst another 276 Seneca would join the Army at Niagra. About another 69 others would drift in during the course of the Siege.