1. data/text/strat.txt. Search for these:
Code:
{SMT_THE_SENATE} The Senate
{SMT_SENATE_POLICY} Senate Policy
{SMT_SENATE_FLOOR} Senate Floor
{SMT_SENATE_NO_MISSIONS} There are currently no senate missions
{SMT_SENATE_THE_SENATE} The Senate
{SMT_SENATE_THE_PEOPLE} The People
{SMT_SENATE_STANDING} Current Standing
Missions can't be edited like that.
2. data/terrain/aerial_map/ground_types If the files are packed in vanilla RTW, you'll need pak extractor to extract them from the packs, which are in data/packs/.
3. data/export_descr_units.txt, it's the 7th entry of the 'formation' line; read the file header or search for "testudo" to see an example of how it is done.
4. No