The unit pictures are located in "x:\...\hearts of iron III\gfx\models\" or for example "c:\program files\paradox interactive\hearts of iron III\gfx\models\". These files are tga files. "GER_heavy_armor_brigade_0.tga" is the only picture for German heavy tanks (in vanilla HOI3/SF). In fact it should be named "GER_heavy_armor_brigade_1.tga" to appear with the Tiger model in game. --> just rename that file and you should see the Tiger picture with your heavy armour brigades named "PzKpfw.VIE Tiger". If you want to do more: To open these files in Windows you could use programs like "irfanview" for example. "Gimp 2" is a good and free tool for people who want to edit the files.
The "major nation immersion pack" is a mod which you can find in the mod section of this forum. The mod includes more models, model pictures, model names and tech names. It includes all majors with the exception of Japan.
- The downsides:
1. because of the many new models in this mod the dlc tank sprites for Germany, USSR and US do not show the proper tank model anymore.
2. The mod is designed for the 1936 scenario only. The changed models might break the game ballance in later games (e.g.: the tank model 5 is not a Panther but maybe a IIIN or the Iowa is suddenly a Colorado class battleship of the 1920s)
3. The mod is designed for an older game version and especially the "common weapons of ww2" dlc might pose a problem here (not sure)
I use that mod too. But I made my own adjustments and I did not copy and paste the mod but was checking every line in every file whether I agree with the changes or not.
If you only play the 1936 campaign and if you do not care that the sprites do not match with the model names this mod is
regarding unit pictures in vanilla HOI: I still wait for the HOI version which shows a picture of the Japanese Kongo-class battlecruiser for the Kongo-class battlecruiser instead of the battleship Fuso. Since the first game the Paradoxian-Fuso claims to be a Fuso and a Kongo:wacko: