Wounded and dead soldiers are fairly easy to make...
Standing ones can be on their backs, with modifications made to the feet and heads... The boots need to be pointed out slightly, with the toes pointing a bit "south"... Then throw the head back, and make sure that if it's in a helmet, that the front of the helmet is thrown over the eyes a bit...
For casualties on their faces, it's a little like this:
Gehfallen für dur Vaterland...
I just moved some arms that I had in the spares bin and then I used heat to "re-aim" the boots into a more relisitc pose... Make sure that you press the figures into the groundwork, so they look dead, not knocked over..
A little bit about blood... For dead troops, make sure that you go easy on it.. Dead men don't bleed... A little blood will ooze frm the kill-shot, and that's about it... It'll also be a shade of dark red, with a touch of brown mixed in... If the casualty bled out before dying, there would be some pooling, but don't splash bright red globs of paint all around.. One, it's not realistic, and Two, it would simply mark you as a tasteless beginner... Also, blood flows out in fine ribbons, not big ol' splotches..
Blood-soaked uniforms would just require a reddish-brown in the area of the wound, basically making the area a lot darker than the surrounding area...
Here, the wounded soldat gives a look at a leg-wound.. Some blood has soaked through the pressure-dressing, and some has soaked through the uniform..
The casualty in the fox-hole is dead, and has simply collapsed in the hole, rather that Hollywood's "flinging arms and throwing rifles" type of death... Soldiers that take a hit to the melon simply drop, no motor-control exists when hit with a kill-shot like that.... (The chevron on the right sleeve is not a rank insignia. It's the Old Fighters (Alte Kämpfer) cheveron, meaning that the person wearing it was a member of the Nazi Party prior to 30 January 1933)...
Here's another angle for the first dead German I showed, finally put in place on the diorama, and also a better angle on the dead German in the foxhole...
The above dio is still a WIP, hence the unpainted stuff and "surrendering German" who's got his arms up for nobody.. (The three American paratroopers that go in there aren't finished, although they've spiked the gun already)
For the dio you're doing, most would be on their faces after being hit, since they were likely running forward when they were hit... That type's easiest, since you don't need to bother with faces, and don't need to worry about uniform fronts...