The collection consists primarily of a manuscript notebook containing military drilling instructions. It bears the description: 'Directions for a small volunteer company of infantry raised June 1798' and is signed 'WHB' (probably Walter Holt Bracebridge, son of Abraham Bracebridge). The following pages contain observations and instructions about military groups, formations, dress, officers, terminology, drill positions, and discipline. A number of formations and drill positions are illustrated with coloured diagrams and drawings. The last two pages of the volume contains names of members of the Atherstone volunteers. The names are divided into four sections, led by that of Captain Abraham Bracebridge c.1798 (MS 122/1).
Together with the volume is a letter addressed to Captain Bracebridge from the Earl of Warwick, enclosing a copied statement by the House of Lords giving thanks to corps of yeomanry and volunteer cavalry and infantry for their efforts during the period of the war (MS 122/2).