Against the background of Birmingham's arms trades in the civil war, Nye developed an interest in gunnery.
In 1643 he tested a Birmingham cannon, and he described an experiment with
a saker which he carried out in the Deritend area of the town in March 1645.
Following the parliamentarian capture of Evesham in May 1645 Nye held the post of master gunner to the garrison there, and he directed the artillery at the siege of Worcester, from May to July 1646. He then served with the parliamentarian garrison of the city, for he was described as ‘Master Gunner of the City of Worcester’ on the title page of his book, The Art of Gunnery, published in 1647. Nye's avowed intention in writing the book was to restore the reputation of gunners, which had suffered through the appointment of men because of their connections rather than their ability. Arguing that it was as easy to fire a piece of ordnance as a musket, he provided a detailed practical guide to the preparation and employment of artillery, stressing the importance of arithmetic and geometry. The book's second section, with a separate title page, is entitled ‘A treatise of artificiall fire-works for warre and recreation’, and includes information on treatments for gunpowder burns. While pointing out that the book was written from his own experiences, he also acknowledged his debt to earlier writers on the use of artillery and preparation of fireworks: William Bourne, John Bate, John Babington, Robert Norton, Niccolò Tartaglia, and Thomas Malthus. The works on arithmetic to which he refers the reader include those by Robert Recorde and Marcus Jordanus.
Nye also had a practical interest in cartography, and recommended that a gunner should have a map of the environs of his garrison that marked all prominent features within range of the defences. He had copies of such plans for Worcester and Coventry, although they are not included in the book. While he does not state that they were prepared by him, that is implied.
Despite his service with the parliamentarian forces, Nye dedicated The Art of Gunnery to the prominent royalist and member of the king's household Montague Bertie, second earl of Lindsey. In the dedication he mentions ‘the particular service I ever did owe and beare to your Lordship and Noble Family’, although the nature of the connection is unknown. Further editions appeared in 1648 and 1670. The frontispiece is a portrait of Nye by Wenceslaus Hollar (whom we have met with several times before on this Forum), drawn in 1644.
I'm hoping we can find out some more about Nye and his works....