Emmando, I'm a bit confused by your post... I know that Deuces don't meet FMVSS 108. They can't... it requires reverse lights.
Anyhow, what I meant was that at the time that's what I thought, because that's what I saw when I was in the Service. Since I've seen newer ones I now know that they weren't always installed. Heck, I yanked several sets of side lights out of the Ft Lewis "Junkyard" for our trucks in the unit though I never got a chance to install them. But it's far more common to see early 70s ones with the side lights than without, and more common to see 60s without. The Federal standard changed in 1969.
With the Deuces I'm not sure it's totally a Euro thing, though. The rear-facing turn signal is. I've seen quite a number of Deuces with side lights but no rear-facing signals. My Deuce, and all but one the trucks with side marker lights we had in my unit, did not have the rear-facing turn signals. I think the only one with rear-facing Signals I remember was the Deuce the Coast-guard unit that lived next to my Navy unit had.
Our M900, OTOH, had all the side lights plus the 3 center lights required by current regs. I think the M35A3s we had briefly also had the 3 center lights. They also had reverse lights.