I’d suggest starting with hit zones, technique, swings and realism. IE where to hit people (shoulder down, not in the groin/breast/head) how to hit people, swing/slash, not poke, prod or stab.
Swinging, 2hand requiring more movement as far as belivability goes, realism being large weapons would be heavy, shields used for blocking, staves used with a wide hand grip and wide stance, or like a sword from one end with long reach.
Also team fighting, 2-3 sheilds vs 4-5 dual wielding or 2 handers, get someone to bring bow & arrows or throwing weapons.
I know its hard for dual weilders to take on sheilded fighters, or those with long 2 handers. But speed and agility can sometimes win outright. The scout camp has a lot of wooded area, so perhaps also find somewhere that resembles that. So people can practice safe combat in forest / on paths etc. Although its training, having a set number of hitpoints can help people react accordingly.
/finishrandomrambling