Original sentence: In 1963 certain NATO nations, including UK, agreed a Ballistics Memorandum of Understanding for a 155mm 39 calibre ordnance and a baseline projectile with the shape used for the US M549 rocket assisted shell
Edited sentence: In 1963 certain NATO nations, including UK, agreed a Ballistics Memorandum of Understanding for a 155mm 39 calibre ordnance and a baseline projectile with the shape used for the US M549 rocket-assisted shell