Yep, that's what it sounded like to me as well castledangerous. Step on beats 1 & 4, just like any other 6/8 march. The drums have simplified their parts, probably due to different scores for each regiment. Bass & tenors beat on 1 & 4, the snares are doing a simple 7-count roll with a one beat rest.

Usually, those slow marches are played at the halt, not on the march, so it seems they've been sped up a little bit to accommodate a decent marching tempo. It also sounds like the pipes are really emphasizing the dot and cut of each tune, also probably due to different scores.