I found this a few years back when there were still junk shops. I bought this because it was the Manual WO 8903 that would have been current when my late father did his National Service c. 1958.
https://manoftinblog.wordpress.com/2017/06/18/national-service-days-1/
He often talked about how rigorous the weapons training was but coming from a mechanical and engineering background, he would have found this far easier than me. 
The figure poses remind me greatly of the Herald modern British Army figures that we all grew up with (featured in Tradgardland’s blog) and curiously of Airfix Multipose British Infantry.
Herald figures late 1950s to 1970s: These uniforms must’ve been very familiar to my National Serviceman Dad when he played toy soldiers with us kids.
The Bayonet Training chapters are interesting – not too dissimilar to the Cut Parry Lunge system of duelling that Donald Featherstone featured in Solo Wargaming.
https://manoftinblog.wordpress.com/2017/04/28/more-duelling-inspiration-bartitsu/
This Manual certainly explains the many odd bayoneting poses by manufacturers.
Bayonet Drill or used in action – That would be a very niche toy soldier collection!
Update: As mentioned in my reply to comments, there is a range of military training manuals from a range of countries on the late Thor Shiel’s Milihistriot website (whilst this remains online). Check out his Sandpit rules and OMOG variants too
http://www.thortrains.com/getright/
Blogposted by Mark Man of TIN 20 April 2020
Man of Tin blog 