It would be cool to fit our scenes from FHSW to BF 1 trailer soundtrack.

I have a suggestion: Since FHSW has no zepellin, we could use this insane HE111 Z + Me Gigant glider combination (from Desert Rose) for the final scene.

For the artilliery part we could use all these Japanese howitzers at Manchuria. So we have more variety in factions.

Are you planning to shoot the naval combat with the dogfight over open sea on the new version of Leyte Gulf Day 2 (1.3) ??

@0:06: nail club kill; and
@0:15: shovel kill
Shoot it on Battle of Britain or Gold Beach, because of all the barrage balloons in the background.
nail club kill -> I decided to use the Katana because it's a unique weapon, is Japanese and has the two animations I need (horizontal and vertical swing)
shovel kill -> I picked Ilomantsi because of the good-looking terrain and to show Fins

@0:10: Horseman on dunes, rocky hills in the background and some dust in the air on the right?
Desert Hill has good looking dunes, plus rocky hills and dust storms. There are a couple of locations that looks similar to the trailer's. Desert Rose has less convincing dunes and I can't find a location that looks as good as Desert Hill's.
These scenes are already filmed. I used Gazala.

@0:24: handcranking the tank
Show the animation for traversing or elevating some artillery piece.
Good idea

@0:27: 5 horses strafed by British biplane, rocky hills in the background
I suggested Desert Rose for this one for the fact that it has a Swordfish and hills. On further examination Desert Hill's terrain may be even better.
I need flat terrain in front of hills to be able to follow with the camera and there's a really good spot on Desert Rose in the south-west. I thought about Desert Hill, too but it has a really bad ground texture (everything looks the same).

@0:33: massive dogfight over steep mountains on two sides, a church and barrage balloons.
There isn't any map quite like this, but there are some things which come close. Battle of Britain has a hill on one side, a factory and barrage balloons; Gazaps has steep mountains on two sides and a church. Apennines with an added church would be close, too.

@0:46: Shell being loaded, view through muzzle
Of all cannons in FHSW I've only seen the Churchill AVRE's petard mortar to show visible ammunition appear in the chamber when it is loaded. Other than that, some rocket artillery pieces also show visible ammunition. I wonder what you have in mind for this.
I have something in mind, I have to see if I like it though.

@0:46: artillery crewman blocking his ear; and
@0:48: soldier blocking his ear inside a tank
I think we could use a few frames from the animation of the Katana. It looks a bit like the arms are covering the ears and we can keep the Katana itself out of view. Alternatively, the "Fire in the hole" animation could be used (left hand around the ear). For the one that is inside a tank - shoot it inside the Ratte.
Fire in the hole animation sounds good, I also like Robert's idea of using the MG cover animation. And today I remembered the FHR mod, when you fire a mortar the soldier blocks his ears.

@0:46: pulling the trigger on the artillery gun
Instead of pulling the trigger we could shoot an officer gesturing a fire command.
Good idea but I can't see an animation when doing the fire command.