The below is an exert of an ABC News (Australian) story about Wagner. Most of it would not be new to readers of this forum but it did have descriptions of small unit tactics that I hadn't really seen anywhere else. The initial wave of 2 groups of 8 are "new" fighters (prisoners / recruits post conflict start) and the old or professional fighters are those with experience prior to Ukraine. The story isn't overly long but I have pasted the interesting bit below after the link.
Vladimir Putin needs Yevgeny Prigozhin and his Wagner Group mercenaries in Ukraine more than anyone else.
"The Ukrainian special forces officer explained to me that the way the Wagner fighters have been operating has been in groups of eight. A team of eight will run, crawl and zigzag towards the Ukrainian line, he said. The team consists of a team leader, a drone operator and six "mules". The mules carry as much ammunition as possible, including rocket propelled grenade launchers and machine guns.
Once the team of eight advances 20 or 30 metres — if indeed they survive — they then try to dig a trench which will form the beginning of the new Russian frontline. They then try to hide themselves and their weapons in this trench. Then a second wave of Wagner fighters will join them and try to make this trench deeper and longer.
If they survive and establish this new frontline, then professional Wagner fighters – the "old Wagners" will join them, or, sometimes, professional Russian fighters may take over these new positions."