A modern battlefield grave is identifiable. Any trained archaeologist would spot such a grave, describe and most likely report it to authorities. There are recognizable signs. We dont dispose of dead soldiers in unmarked pits, not individuals.
There are teams of people who go out to dig up battlefield graves. Soldiers know this. So, if they have to bury someone, they generally mark the site. Bodies are also laid out with a degree of dignity, not tossed. In very simple terms, soldiers in modern conflict tend to die face-down. A battlefield grave will have the body face-up, covered in loose earth, and positioned like they were lying in a flat bed. A body crumpled up in a pit is almost certainly not a battlefield grave.
(Soldiers dont bury bodies while under fire. The burials happen after the battle is over by whatever side now holds the ground.)
"We dont dispose of dead soldiers in unmarked pits, not individuals."
Not sure if I understand you right, but unmarked pits were very much a common thing in the last days of WW2 in europe. Plenty of dead individuals, no one knew where they belonged and not much interest to find out.
Where there were lots of bodies, pits were used. But a lone body would have been burried differently. Even in the wars today, pits are only used when necessary to dispose of large numbers. Single dead soldiers can be put in proper graves as time/manpower is not an issue with a single body.
I didn't, only for a dog and this was already tough work in stony ground. Add frozen ground and the need to care to other things(and maybe no shovel), like surviving the last days of war and I can imagine many dead bodies not getting proper graves.
