Do not confuse Volley and Bayonet with Volley & Bayonet II . While the latter is newer, many grognards (hardcore veteran players) continue to play the "Road to Glory" edition, which is the primary target of the "PDF version" search.
A detailed PDF covering specific rules for the American War of Independence is available via JD Glasco’s blog .
The system is built on a standard turn sequence that governs thousands of troops per stand: Volley and Bayonet Rules Overview | PDF | Infantry - Scribd
Go to Wargame Vault. Search "Volley and Bayonet Road to Glory." Pay the $17.99. Download the PDF. Print the QRS. And may your infantry hold the line.