you have to edit the name of the flag for the units with:
FLAG_GER.BMP
and the flag of the country that will be in the upper right with:
SHIELD_GER.BMP
then search in your HoI directory:
..\Hearts of Iron\gfx\map\shields
there you put the shield...
and:
..\Hearts of Iron\gfx\map\flags
there you put the flag...
run the game and now you have the new German flag installed
to install other flags, you have to know the exact tag of the country, for example for:
Soviet Union -> SOV
Argentina -> ARG
...
so you must do the same, but in the first step you have to replace FLAG_GER.BMP for FLAG_XXX.BMP, being XXX the tag of the country that you want to replace the flag.
the same for the shield...
