I can only give you one like for this. It's a brilliant book. If you like it, try 1356 which is similar. It's part of the 'Grail Quest ' pantheon and again, all about archers.
His more modern novels - as set in more modern times - such as 'Crackdown' 'Wildtrack' and 'Sea Lord' are very good and much, much better than Jack Higgins output.